I was one of the engineers that helped build, test, launch and operate Deep Impact. I was the Launch Conductor on Launch Day and a member of the mission operations team at JPL. At JPL I performed duties of Navigation Team Member, Activity Lead, Flight Director, and the Impactor Command and Data Handling subsystem Engineer during the encounter. Coincidentally - I left Lockheed Martin in 2000 specifically to work on Deep Impact. At Lockheed Martin I helped with Mars Global Surveyor, *Stardust* , and Genesis. So, while it was a let down missing the image of the crater with the DI Flyby HRI Instrument (the "Primary Science" of DI), it was going to be my OTHER Trusty spacecraft to come along and get the image. It was especially important because the images that stardust took were through the Instrument that I was personally responsible for and integrated onto the Stardust Spacecraft, the "Navigation Camera". It was some leftover parts of a Voyager flight Camera with a Cassini CCD in place of the old phot-multiplier tube.
i am amazed at what you people can do. magicians even better than the imaginary ones! such precision and timing and longevity of parts undergoing nasty launch stresses, radiation and micro meteor impacts! NASA is the king of space robots. how much of this is art and not science, and will the next generation be able to continue your success record?
This was utterly enthralling and quietly mind-blowing. The precision required to do any of this is incredible and the findings are fundamental. Thanks for bringing these projects to a wider audience
As much as I am not a math guy, I find beauty in the accuracy, precision and stunning amount of work that must have went into such a project and goal. To be this precise twice in a row. Kudos to the scientists that achieved this for all to see.
I watched the live report of Giotto's fly-by of Halley's comet as a kid and was riveted to the screen and commentary. I spent 3 weeks tracking Halley's across the night sky, and though it wasn't particularly visually spectacular, I was hooked on astronomy. Hale/Bopp gave me that stunning majesty I always expected of a comet to the unaided eye. I was bowled over by it's gorgeous beauty and would stare at it for hours. When I pointed it out to my girlfriend in the clear air of a mountain top, her eyes were like saucers and she was almost speechless.
I watched it on BBC TV, hosted by Patrick Moore. The funniest thing to happen was when Giotto flew into the comet's tail and went quiet. A schoolboy, who was sitting with Patrick in the Studio, suggested that the probe had gone quiet because it had been damaged by the dust. Patrick poo pooed this idea, but the kid was proved correct. However, no mention was made by Patrick that the kid was correct and he went down in my estimation.
My former neighbors were really ghetto people . . It got to the point that if I saw something unusual in the sky. (Like all the planets lining up in 1999) all I had to do was knock on their door and they’d come rushing out to see it even if it was winter and they were in their PJs.
I've known only a few scientists in my 70 years. I am referring not just to folks who have degrees but people who actually who ask good questions and go about answering them with discipline and dedication. They seem driven to me. In fact I asked one "Why did you become a scientist?" and the answer was, "I never had a choice. I count myself very fortunate to have known my life's direction. I knew what I was going to do." And so he went on to educate himself and holds a few patents, published papers. Listening to this... Astrum reminded me of this. And I'm willing to bet that if we asked him why he makes these videos his answer would be close to "I never had a choice."
Being a fanatic is better than just being able to do something. Would you prefer the fanatic doctor or the normal doctor? I feel the same way about my path in life too.
@@iRossco That's fucking hilarious. You know there are AI channels right? The voice is computer generated, the text is LLM like ChatGPT or Gemini generated. This isn't my opinion, everyone knows about it. You can spot them when they don't use common phrases, like instead of saying forty caliber bullets, since it's reading text it says point four zero bullets. What is your rationale for thinking I'M a bot?
I get this feeling. My biggest drives are to create and to learn. These things are as essential to my makeup as breath. I have at least a dozen artistic hobbies. And my brain just doesn't quit. If I am not learning, I am enduring the excruciating pain of boredom. If I am not creating, I feel the sting of not fulfilling my life's purpose.
Ha!! You watch...someday you'll dust it off, sand it down, stain it, seal it with a bit of polyurethane and make yourself an awesome little backyard bar. Cheers!🥂
Hi Alex. I know you realise how unbelievably important your productions are but id like to give you from my point of view why they are so. Im a late 40 year old, spent most of my life wt sea and am well travelled. I speak 7 languages but one language i cannot get my head round is the language of space. I dont understand space and the universe at all. You manage to bring all of that noise thrown at the general populous of the earth and turn it into something understandable and bring it alive. Believe it or not your videos have even brought my own life more interesting, things i see here on earth now take on a whole new meaning. Now when im at sea looking up at the stars, i now hive a small understanding of what is going on above me. So thank you. Dont give nupnmaking them.
That’s interesting because you are clearly very smart. I am so bad with languages and spelling but physics intuitively makes sense to me… just interesting seeing different people talents
Fantastic. Spot on! I worked on the DI spacecraft flight software from proposal to end of mission. Temple 1 impact and Hartley-2 flyby. I was at JPL for all mission ops. Best time of my life. Such a great team, great mission and great science. Thank you for this superb video.
No matter how far technology progresses, mathematical laws remain. It’s actually incredible what has been achieved using the study of trajectories and the dedication and money that goes into each of these missions.
"TECHNOLOGY" HAS "EXPLODED" "OVER" THOSE "YEAR's" = OUTSTAND'n & "BEATIFUL" ...."WOMAN"....ALSO......& thank's too this "TH-cam" ,........MOSTLY those "SELECTIVE" "WOMAN" !!
Doing stuff in space is easier than in atmosphere. Buzz Aldrin literally figured out how to do orbital rendezvous while up in orbit, he found that firing the rocket directly towards the target caused a brief overshoot followed by an undershoot, and then pulled out his pen and paper to crunch the numbers on how they needed to burn.
"The image NASA didn't want to receive." "This is bad." Are the clickbait titles really necessary? Do you really think people would not be interested in comets otherwise?
With that title I was expecting some breathless anxious nonsense, but then I discovered it was about comets, which are certainly interesting enough without the clickbait
Agreed. It's getting harder and harder to take these channels seriously. Astrum, The Why Files (even worse), and many others. Think i'll just stick to Sabine's channel from now on.
@@G45H3R Also worth noting no sources are cited for information or visuals. Neither in the video or the description. Not like I don't believe them, it's just weird that they go through so much effort to create these educational resources without giving any resources for learning more about each part. Naturally, I don't think they are, but they could be lying for all we know!
I’ve been recommending you to people I know who aren’t particularly familiar or very interested in these subjects by describing you as the David Attenborough of the Solar System. I use this comparison because just like Attenborough you bring forth the wonder and complexities of the natural world to the masses in such a marvellously detailed way. It’s digestible and enthralling. And once again similar to David Attenborough you are completely unique in the way you convey and portray the information on the subject. I screen recorded this intro to this video to give them an idea because of how beautifully you put into perspective our historical interpretations of comets to our current capabilities to explore and interact with the seemingly unobtainable aspects of the sky above us. It was truely inspirational to me and the people in my life I try to share your channel with. Thank you for your passion and efforts. I’ve been on this channel back in the early days when you began your planetary solar system videos and it’s wonderful to see your growth and success, it’s well deserved! Thank you and thank you again and again.
You can't be David Attenborough until you've been this far from being boiled and eaten by Dinka tribesmen, while your balls are made into trinkets and earrings n stuff, but you convince them you are worthy and talk them out of it and even get a standing invitation to come back and hang around.
Astrum, your attention to detail is on another level. Another brilliant video! In a world full of TikTok and TH-cam short videos. It's hard to keep people captived and watching for 30 minutes. Yet, you manage to do that, thank you! Always looking forward to the next video!
I've never used tiktok and avoid shorts and creators that produce them like the plague, I'm in this game to learn and be informed not to read headlines all day.
@@desperatelyseekingrealnews While I like shorter form content here on TH-cam at times, I generally prefer hour long videos, even if I just use those as background noise. Depends on the topic and content though; also your attention span/habit of using social media I guess. It's a bit sad that TH-cam discourages long form content so drastically
*It's mind-blowing to see the precision and attention to detail required for such a mission. Hats off to the team behind it! Your videos never disappoint, always informative and captivating.* 👍👍👍
With most channels, anytime they post a 30 minute video, I eventually struggle to stay interested and often catch myself fast-forwarding through parts of it to avoid losing interest altogether. That being said, that's definitely not the case with this channel; The content is great and easy to get into, and never once have I lost focus in any of his videos.
Thank you Alex for not only being precise in relaying your research, not only your researching efforts but being impeccably well spoken in imparting it.
I remember Hale-Bopp in 1997. What a spectacular sight. I walked around with my binoculars and showed so many people. Most did not even realise it was there. Every one of them was awestruck though. You did not need binoculars though as you could see it with ease, but with them it was out of this world.
It’s metaphorically inspiring. Like us, they have no choice that they were created and then flung into the thankless lonely vacuum of space. & Their tireless labor for an ideal they don’t even understand is noble if you anthropomorphize them. they can be viewed as emblematic, even extensions of the human spirit to explore and push past our limits. But also like us, they eventually wind down, inexorably ground down out of functionality. Ashes to ashes, all that. it also makes one ponder on the enormity of space, the infinity of time that would be required to absorb all the knowledge of the universe, the impossibility of doing so and the sheer insignificance of our individual existences in the face of such incomprehensible things.
Bad title for the video but the video itself is extremely well made and informative. Subscribed just because of this video to check out the rest. Interesting facts.
Exactly. Even our own history is severely lacking and we have reason to believe humans have been on this planet for millions of years in some form or another. I think about how little time is a lapsed since we gained some mastery of electricity or fuel and where we are now. If we were able to do all of that and just a few hundred years and only have history going back a few tens of thousands of years, I have to wonder what else could have been going on even 100,000 years ago, let alone millions. Were we really nothing more than just another animal on this planet until recent history, where we've gained the ability to leave the planet, and destroy it?
I remember Halley’s Comet in the 1980’s. we live in Marin County in Northern California, just over the Go,den Gate Bridge from San Francisco. Because the air is fresh and right off the Pacific, the nights are carpets of stars. For a week or so back then, Halley’s Comet hung in our western sky, silent, seemingly fixed, but actually moving lower and lower every night, on the western horizon. It was beautiful. On one hand, it was technical and scientific display, covered in the local media and television; on the other, and awe inspiring demonstration of what our ancestors had seen… a silent messenger in the heavens. Thanks for this videp.
I remember the palpable excitement among our amateur (independent?) astronomy club when Deep Impact was about to happen, and some of them were able to actually see a bit of the show. I was busy with the family for the holiday. I'm not bitter though... ;-)
So I just realized that whenever I thought of rocket science, I assumed it was just the building of them, which while impressive, isn't something I'd consider the hardest thing in the world. But this video shows that rocket scientists also are able to calculate orbits and gravity on such a monumental scale, that I now understand why it's the hardest thing....
There is a computer game called Kerbal Space Program. It's a rocket building sandbox kind of game. There are astral bodies you can aim to explore/land on. Going through the process of getting a Kerbal to their moon and back is monumental achievement and yet still only a pale example of the real deal.
Deep Impact was a NASA space probe launched from Cape Canaveral Air Force Station on January 12, 2005. It was designed to study the interior composition of the comet Tempel 1 (9P/Tempel), by releasing an impactor into the comet. At 05:52 UTC on July 4, 2005, the Impactor successfully collided with the comet's nucleus. The impact excavated debris from the interior of the nucleus, forming an impact crater. Photographs taken by the spacecraft showed the comet to be more dusty and less icy than had been expected. The impact generated an unexpectedly large and bright dust cloud, obscuring the view of the impact crater. Man this event was almost 18 years ago !!
Comet Wild 2 was discovered by Paul Wild on Jan. 6, 1978. Overview. 81P/Wild (Wild 2) (Wild is pronounced vilt) if anyone else was curious why it was pronounced that way in the video
Love your deep dive videos about past space missions. Keep it up! Also, I've been watching your channel for years then checked it now. Wow, you're raking in millions of views. Well deserved for such high quality content. Glad the effort paid off
Think maybe you could post in the description a timestamp for where you start talking about the actual topic that's in the title of the video??? I will say this video is a nice 30 minute piece on the history of space flights, sattelites, comets, outer space and more. I'd just like the 30-second piece of video telling what the image NASA didn't want to see is.
"It will no longer be so mysterious or foreboding. They may even be the reason you're here today. And all it took to learn this was to catch the dust from one, and to punch another really, really hard." What I heard is "To get the answers they demand. Humans are literally doing enhanced interrogation of celestial bodies." Yeah, I'm thinking based.
You add so much value to my life Alex. Thank you for making Astrum. Life changing. Seriously. This channel is beautiful, elegant, and a wonderful experience
Working at one of the telescopes on Mauna Kea (from the office, not from the mountain) I may have been the last one to find out whether Deep Impact actually hit. I was just there to make sure that we could observe what actually happened, not to observe it. I only found out when I left the office that people at a neighboring office were cheering.
love how practical the mission is, but meaningful and brings a lot of feedback. its a small feat but an achievment still, now we can crecreate accurate simulations of impact craters etc
That video was amazing! I was always interested in space and space missions but had missed a lot of last years missions about comets to be exact! I learned more from this video that I hadn't exactly undrstood for many years....extremely well written and edited, very informative about the finer details, and gives a wonderfull view on our Solar System's comets! Many thanks for posting this great video, thanks!
I’m at UMD and one of my closest mentors was deputy PI on Deep Impact. The naming of the movie and mission was indeed a coincidence and kind of caused a few minor nightmares 😂
Another great video with attention to so many details. Adding to the material is your presentation of the commentary. Such a refreshing change from so many AI-generated commentary that use door punctuation and grammar as the source. Thank you.
A very snazzy and cool bit of science that, kudos to all involved. The fact they described them as 'gem-like' was really intriguing too. Made me go 'oooooh!' 😁
I have a piece of the Aerogel from the Stardust "Engineering Development Unit" on the Stardust Spacecraft. We put the "EDU" Grid only sparsely populated with Aero gel through all of the environmental tests, then swapped it with the fully populated "flight unit" before launch. They gave out the pieces in the EDU grid to the VIPs on the program. My piece even has some of the "carrot tracks" in it from the hypervelocity testing before launch.
1:24 the exact moment we avenged the Dinosaurs. Titles like with this video tend to be clckbait, but I always look who uploaded before clicking and when I see Astrum I tend to think it probably isn't that much clickbait as it seems to be. Always love your videos and learned a lot over the years watching you.
excellent video breakdown! i don’t particularly recall this entire multi-purposed mission (life was crazy back then), but wow! i also was able to do the quick calculations from your Halley’s comet date from my childhood: if i’m lucky, i might be witness to a 2nd flyby Halley’s comet at the (horrifying) age of 86! either way, at least i saw it once in my lifetime! thank you!
Small correction @19:50: White and red "hot" is actually cooler than blue hot. Yes, the colors on the taps of most office water dispensers and household faucets are backwards. Red should mean cold while blue should mean hot. Thanks!
the "colors" of heat are generally a misnomer. it has more to do with the emission spectra of what is being heated or burned than the temperatures involved. the reason we use red and white to describe levels of heat has more to do with the most common things BEING heated, than anything else. red hot was adopted since, the most common super hot things humans dealt with for a long long time was iron, copper, and other metals being heated for smelting and forging. red is the color most of these metals turn when heated. when sufficient technology had been developed to forge hotter metals, or outright liquify former ones, white hot was dubbed. as metals heated to those temperatures emit a white light, to the naked eye. tl;dr the colors of flames have little to do with why we call things white or red hot. and in fact the color of flames has nothing to do with the heat of the flame in the first place. a propane flame will be blue no matter how hot its burning.
@@foxboy64 You're confusing emission spectra with thermal radiation. Copper compounds typically burn with a green flame because copper's emission lines are predominantly green to our eyes, but when heated, copper glows red to white just like iron. These glows when heated are what @Sammasambuddha is referring to.
I worked on blue/red water temperature for decades. Red because your hand turn pink when it's been in hot water. Blue because your hands turn blue in cold, cold water.
i think the red hot and blue cold thing cane around because you can't see the light emitted by warm things until they get hot enough and red is the very start of that and blue cold probably comes from ice being made of water which is often depicted as blue
"Let's crash into the sunny side so there is better lighting for our pictures" Then the sunlight on the crater heats the newly exposed ice enough causing the ice to melt and evaporate, creating a cloud of gas and dust so they couldn't see the crater at all. They are some of the smartest people on Earth. They can design, build, and send a probe to a small comet. But they overlooked the simple things. They didn't think about the effect of sunlight and heat on the ice inside the comet. The reason comets have tails. That sounds about right.
I noticed that the narration from 11:07 to 20:58 is lifted basically word-for-word from the 2022 NewsBreak article "Stardust's surprising discovery by NASA" attributed to 'Science & Technology.' I did not see any mention of this article in the credits, description, or video. I was curious if you are affiliated with NewsBreak, as the website claims it is their original property over a year before this video. Cheers! Edit: After looking further, I recognize that I failed to realize that this is a Supercut. Your original video containing this information actually predates the aforementioned article by 6 months. It appears they potentially lifted your original narration and used it to generate an article?
thank you for this! this channel used to be my go to when it came to space related news, but these things just keep happening and not to mention the clickbait titles getting worse.
@@Tip_Tupper I understand how you feel! I'm choosing to reserve judgement, as it's possible Astrum is somehow related to NewsBreak. Also, I love your profile picture!
@@Tip_Tupper It appears I might have been incorrect. After digging further, it's obvious that this is a supercut of shorter Astrum videos. In fact, Astrum's original video containing this text predates the article by 6 months. It appears that NewsBreak might have actually stolen his narration line-for-line and used it to generate an article.
@@Tip_Tupper There is 0, count em, 0 words in this title that are clickbait. IF you failed to realize the images they didnt want to receive, were the images obscuring the whole point of the mission in the first place. Then jokes on you. Youre a tool
I seem to have missed something; which image was the image NASA didn't want to receive? Are you talking about the image of the dust cloud as opposed to an image of a crater?
9:30 the unexpected flash included ultraviolet light, which doesn’t happen so much with collisions of mass, however it is always present with electrical sparks. Even electrostatics sparks, which are very scalable… This large flash was very much expected by some (it was documented). This is really kindergarten knowledge when you are familiar with the electric universe model, but would make your head hurt if you’re not.
Alternate Title: That Time NASA Punched A Comet Really Hard for Science
for science!
And didn't get the results they wanted. Hence the title.... Stop crying and stop making things up in your head and you won't be disappointed.
ahh, but it wouldn't have been clickbait then
No, it should be: "That Time NASA Punched A Comet IN THE FACE"
"That Time NASA Punched a Comet... IN BROAD DAYLIGHT!"
I was one of the engineers that helped build, test, launch and operate Deep Impact.
I was the Launch Conductor on Launch Day and a member of the mission operations team at JPL.
At JPL I performed duties of Navigation Team Member, Activity Lead, Flight Director, and the Impactor Command and Data Handling subsystem Engineer during the encounter.
Coincidentally - I left Lockheed Martin in 2000 specifically to work on Deep Impact.
At Lockheed Martin I helped with Mars Global Surveyor, *Stardust* , and Genesis.
So, while it was a let down missing the image of the crater with the DI Flyby HRI Instrument (the "Primary Science" of DI), it was going to be my OTHER Trusty spacecraft to come along and get the image.
It was especially important because the images that stardust took were through the Instrument that I was personally responsible for and integrated onto the Stardust Spacecraft, the "Navigation Camera". It was some leftover parts of a Voyager flight Camera with a Cassini CCD in place of the old phot-multiplier tube.
Thank you for your service!
Nice work reusing old spare hardware.
@@TatsuZZmage I was also in charge of installation of an old Voyager spare camera onto the Stardust spacecraft to use as its navigation camera.
i am amazed at what you people can do. magicians even better than the imaginary ones! such precision and timing and longevity of parts undergoing nasty launch stresses, radiation and micro meteor impacts! NASA is the king of space robots. how much of this is art and not science, and will the next generation be able to continue your success record?
Well done!
This was utterly enthralling and quietly mind-blowing. The precision required to do any of this is incredible and the findings are fundamental. Thanks for bringing these projects to a wider audience
I can't imagine all the Alien families living on that rock that were annihilated in the name of science.
video starts at 17:00
@@fibonacho thanks bro
@@fibonacho Hero
What is this word salad of a sentence?
As much as I am not a math guy, I find beauty in the accuracy, precision and stunning amount of work that must have went into such a project and goal. To be this precise twice in a row. Kudos to the scientists that achieved this for all to see.
The music in this video is by Stellardrone. The track being played is Eternity. Probably one of the best bits of spacemusic ever created.
Thank you!
This music is what Lt Uhura listened to from her ear bulb 😂
I watched the live report of Giotto's fly-by
of Halley's comet as a kid and was riveted to the screen and commentary.
I spent 3 weeks tracking Halley's across the night sky, and though it wasn't particularly visually spectacular, I was hooked on astronomy. Hale/Bopp gave me that stunning majesty I always expected of a comet to the unaided eye. I was bowled over by it's gorgeous beauty
and would stare at it for hours. When I pointed it out to my girlfriend in the clear air of a mountain top, her eyes were like saucers and she was almost speechless.
For me it was Shoemaker Levy 9 hitting Jupiter. I was like 😮😮😮😁
I'm glad your girlfriend was awestruck. Wouldn't it have been a drag if she had yawned and said "whatever"?
@@philiprife5556 It would, and she would have become an "ex" much quicker.
I watched it on BBC TV, hosted by Patrick Moore. The funniest thing to happen was when Giotto flew into the comet's tail and went quiet. A schoolboy, who was sitting with Patrick in the Studio, suggested that the probe had gone quiet because it had been damaged by the dust. Patrick poo pooed this idea, but the kid was proved correct. However, no mention was made by Patrick that the kid was correct and he went down in my estimation.
My former neighbors were really ghetto people . . It got to the point that if I saw something unusual in the sky. (Like all the planets lining up in 1999) all I had to do was knock on their door and they’d come rushing out to see it even if it was winter and they were in their PJs.
I've known only a few scientists in my 70 years. I am referring not just to folks who have degrees but people who actually who ask good questions and go about answering them with discipline and dedication. They seem driven to me. In fact I asked one "Why did you become a scientist?" and the answer was, "I never had a choice. I count myself very fortunate to have known my life's direction. I knew what I was going to do." And so he went on to educate himself and holds a few patents, published papers. Listening to this... Astrum reminded me of this. And I'm willing to bet that if we asked him why he makes these videos his answer would be close to "I never had a choice."
Being a fanatic is better than just being able to do something. Would you prefer the fanatic doctor or the normal doctor?
I feel the same way about my path in life too.
Except it's a bot.
@@BariumCobaltNitrog3nyou're a bot
@@iRossco That's fucking hilarious. You know there are AI channels right? The voice is computer generated, the text is LLM like ChatGPT or Gemini generated. This isn't my opinion, everyone knows about it. You can spot them when they don't use common phrases, like instead of saying forty caliber bullets, since it's reading text it says point four zero bullets. What is your rationale for thinking I'M a bot?
I get this feeling. My biggest drives are to create and to learn. These things are as essential to my makeup as breath. I have at least a dozen artistic hobbies. And my brain just doesn't quit. If I am not learning, I am enduring the excruciating pain of boredom. If I am not creating, I feel the sting of not fulfilling my life's purpose.
Great video and educational... but I have one question. What was the image that NASA didn't want to receive from the Deep Impact Probe?
im guessing it must be the view of the impact crater obscured by the material ejected
Click bait; or maybe proof it never happened? 🤣
Why am I not surprised the whole title is clickbait..... dafuq.
this channel is so click baity
@@primarytrainer1probably an AI content farm.
Nasa keeping old satellites around is basically a scaled up version of that block of wood that has been in my garage since 2006
Ha!! You watch...someday you'll dust it off, sand it down, stain it, seal it with a bit of polyurethane and make yourself an awesome little backyard bar. Cheers!🥂
❤😂🤣
So we can drop them on other countries...
basically, your comment is like that piece of wood you have in your garage since 2006… old satellites work just fine 20 years later.
@@BarrowedtimeBrian🥹 where do people get such ideas?😂
Hi Alex. I know you realise how unbelievably important your productions are but id like to give you from my point of view why they are so. Im a late 40 year old, spent most of my life wt sea and am well travelled. I speak 7 languages but one language i cannot get my head round is the language of space. I dont understand space and the universe at all. You manage to bring all of that noise thrown at the general populous of the earth and turn it into something understandable and bring it alive. Believe it or not your videos have even brought my own life more interesting, things i see here on earth now take on a whole new meaning. Now when im at sea looking up at the stars, i now hive a small understanding of what is going on above me. So thank you. Dont give nupnmaking them.
That’s interesting because you are clearly very smart. I am so bad with languages and spelling but physics intuitively makes sense to me… just interesting seeing different people talents
@@goldengoat1737 Yeah, there is not just one way to be smart. Which is fortunate, because our societies have many different areas of focus.
Fantastic. Spot on!
I worked on the DI spacecraft flight software from proposal to end of mission. Temple 1 impact and Hartley-2 flyby. I was at JPL for all
mission ops.
Best time of my life. Such a great team, great mission and great science.
Thank you for this superb video.
Very cool, kudos to you 👍
Thank you for your work
Sounds like being a little part of history..!
Hello Tomas! Been a while! It was probably the greatest accomplishment of my career as well.
Wow. Great to hear from you guys (Tomas and Stuart). Real life rocket scientists!
No matter how far technology progresses, mathematical laws remain. It’s actually incredible what has been achieved using the study of trajectories and the dedication and money that goes into each of these missions.
So do paradoxes and no solution equations.
I had no idea math was a universal law.
"TECHNOLOGY" HAS "EXPLODED" "OVER" THOSE "YEAR's" = OUTSTAND'n & "BEATIFUL" ...."WOMAN"....ALSO......& thank's too this "TH-cam" ,........MOSTLY those "SELECTIVE" "WOMAN" !!
@@jasonhollister7497 the fact that you edited your comment and this was the final cut is honestly incredible.
Doing stuff in space is easier than in atmosphere. Buzz Aldrin literally figured out how to do orbital rendezvous while up in orbit, he found that firing the rocket directly towards the target caused a brief overshoot followed by an undershoot, and then pulled out his pen and paper to crunch the numbers on how they needed to burn.
"The image NASA didn't want to receive." "This is bad." Are the clickbait titles really necessary? Do you really think people would not be interested in comets otherwise?
With that title I was expecting some breathless anxious nonsense, but then I discovered it was about comets, which are certainly interesting enough without the clickbait
Agreed. It's getting harder and harder to take these channels seriously. Astrum, The Why Files (even worse), and many others. Think i'll just stick to Sabine's channel from now on.
@@G45H3R Also worth noting no sources are cited for information or visuals. Neither in the video or the description. Not like I don't believe them, it's just weird that they go through so much effort to create these educational resources without giving any resources for learning more about each part. Naturally, I don't think they are, but they could be lying for all we know!
unlike and report
💯
Really makes you appreciate just how much precision work & ingenuity was involved in every little step of the way
Excellent production. So complete and so educational. Thanks Alex
I’ve been recommending you to people I know who aren’t particularly familiar or very interested in these subjects by describing you as the David Attenborough of the Solar System. I use this comparison because just like Attenborough you bring forth the wonder and complexities of the natural world to the masses in such a marvellously detailed way. It’s digestible and enthralling. And once again similar to David Attenborough you are completely unique in the way you convey and portray the information on the subject.
I screen recorded this intro to this video to give them an idea because of how beautifully you put into perspective our historical interpretations of comets to our current capabilities to explore and interact with the seemingly unobtainable aspects of the sky above us. It was truely inspirational to me and the people in my life I try to share your channel with.
Thank you for your passion and efforts. I’ve been on this channel back in the early days when you began your planetary solar system videos and it’s wonderful to see your growth and success, it’s well deserved! Thank you and thank you again and again.
You can't be David Attenborough until you've been this far from being boiled and eaten by Dinka tribesmen, while your balls are made into trinkets and earrings n stuff, but you convince them you are worthy and talk them out of it and even get a standing invitation to come back and hang around.
This is such a wonderful comment 💚💚
I'd hit the character limit before I could properly say how good this is.
Astrum, your attention to detail is on another level. Another brilliant video!
In a world full of TikTok and TH-cam short videos. It's hard to keep people captived and watching for 30 minutes. Yet, you manage to do that, thank you! Always looking forward to the next video!
Exactly 😊
I've never used tiktok and avoid shorts and creators that produce them like the plague, I'm in this game to learn and be informed not to read headlines all day.
@@desperatelyseekingrealnewsi’m with you there
@@Isigia_Official So am I. This is easily as good as APOD. Even better in a few ways.
@@desperatelyseekingrealnews While I like shorter form content here on TH-cam at times, I generally prefer hour long videos, even if I just use those as background noise. Depends on the topic and content though; also your attention span/habit of using social media I guess. It's a bit sad that TH-cam discourages long form content so drastically
My admiration for the people behind these missions is unbounded. So much respect for the work involved and the learnings from it.
Damn, that little bit about Stardust restin at the end made me a little emotional. feeling feels over a satellite. wild.
Right?! I can't believe how sad I felt :'(
@@MFBanksy It had a good life and accomplished a lot.
Don't be sad. Be proud.
*It's mind-blowing to see the precision and attention to detail required for such a mission. Hats off to the team behind it! Your videos never disappoint, always informative and captivating.* 👍👍👍
Check the comments, several of the people that put it up in space are here.
Science Fiction!!!!!
One of the best presentations on cometary missions, Thanks for the excellent production
With most channels, anytime they post a 30 minute video, I eventually struggle to stay interested and often catch myself fast-forwarding through parts of it to avoid losing interest altogether. That being said, that's definitely not the case with this channel; The content is great and easy to get into, and never once have I lost focus in any of his videos.
@jus10lewis.85
Maybe learn to have a better attention span
@JackSmith-kp2vs
Is what every school teacher ever has said to every student ever.
Now, tell us how.
Have you found The Why Files? Is good!
Thank you Alex for not only being precise in relaying your research, not only your researching efforts but being impeccably well spoken in imparting it.
Is that a Welsh accent do you think?
Bravo to whoever did the math for Stardust and Stardust NeXT! I'm impressed.
I remember Hale-Bopp in 1997. What a spectacular sight. I walked around with my binoculars and showed so many people. Most did not even realise it was there. Every one of them was awestruck though. You did not need binoculars though as you could see it with ease, but with them it was out of this world.
I’ve been watching this channel for years, it’s just the best. Always a good day when a long episode is out. Appreciate it dude
agree, good job to him!
Agreed and was totally captivated by the entire video. I hope high school science teachers use this video.
Me too! I remember when he had about 100K subscribers. Now he’s at over 1.5 million. Consistently great content.
Of CoUrSe mE oT
It's weird that no one seemed to foresee that the ejected dust from the impactor might obscure the orbiter's view of the crater.
I don't know why I always cry about the little machines we send to the stars doing their very best until their very last
It’s metaphorically inspiring.
Like us, they have no choice that they were created and then flung into the thankless lonely vacuum of space. & Their tireless labor for an ideal they don’t even understand is noble if you anthropomorphize them.
they can be viewed as emblematic, even extensions of the human spirit to explore and push past our limits.
But also like us, they eventually wind down, inexorably ground down out of functionality.
Ashes to ashes, all that.
it also makes one ponder on the enormity of space, the infinity of time that would be required to absorb all the knowledge of the universe, the impossibility of doing so and the sheer insignificance of our individual existences in the face of such incomprehensible things.
Bad title for the video but the video itself is extremely well made and informative. Subscribed just because of this video to check out the rest. Interesting facts.
24:17 holy moly, calculating the alignment of the Temple 1 just from the brightness spikes years ahead to meet with Stardust NExT is so scifi!
Wish I could live long enough to really know what's going on in our universe.
Exactly. Even our own history is severely lacking and we have reason to believe humans have been on this planet for millions of years in some form or another. I think about how little time is a lapsed since we gained some mastery of electricity or fuel and where we are now. If we were able to do all of that and just a few hundred years and only have history going back a few tens of thousands of years, I have to wonder what else could have been going on even 100,000 years ago, let alone millions. Were we really nothing more than just another animal on this planet until recent history, where we've gained the ability to leave the planet, and destroy it?
Your consciousness doesn’t die when your physical body dies…you’ll find out.
@@djuanbenjamin9149 And you already know for sure..? Do they have Wi-Fi in the after life?
Don't we all. I know we aren't alone. There are far too many much older rocks than ours. Believing we are special is a human failure
And Einstein proved we cannot create or destroy energy. So yes, your soul will abide after your body is used up.
What incredible science and engineering, it’s a pity missions like this are often forgotten instead of the mistakes such as Mars pathfinder
The mathematical precision is mind-boggling.
I love your breakdown of the history of aerogel and the instrument designed with it on Stardust! Truly remarkable engineering and mathematics! ❤
I remember Halley’s Comet in the 1980’s. we live in Marin County in Northern California, just over the Go,den Gate Bridge from San Francisco. Because the air is fresh and right off the Pacific, the nights are carpets of stars. For a week or so back then, Halley’s Comet hung in our western sky, silent, seemingly fixed, but actually moving lower and lower every night, on the western horizon. It was beautiful. On one hand, it was technical and scientific display, covered in the local media and television; on the other, and awe inspiring demonstration of what our ancestors had seen… a silent messenger in the heavens. Thanks for this videp.
I remember the palpable excitement among our amateur (independent?) astronomy club when Deep Impact was about to happen, and some of them were able to actually see a bit of the show. I was busy with the family for the holiday. I'm not bitter though... ;-)
The math and calculations needed to perform such tasks is beyond amazing. What a feat!
Thank you for this fascinating presentation.
Not a clickbait title or fear mongering. Watch the video.
Impressed by these clips, they are easy to follow and very intersting!
So I just realized that whenever I thought of rocket science, I assumed it was just the building of them, which while impressive, isn't something I'd consider the hardest thing in the world. But this video shows that rocket scientists also are able to calculate orbits and gravity on such a monumental scale, that I now understand why it's the hardest thing....
The old rocket engineer-rocket scientist mixarooni😂.ya me as well
Orbit calculation and necessary thrust actions are IMHO solar system mechanics, not best classified as rocket science.
There is a computer game called Kerbal Space Program. It's a rocket building sandbox kind of game. There are astral bodies you can aim to explore/land on. Going through the process of getting a Kerbal to their moon and back is monumental achievement and yet still only a pale example of the real deal.
You are confusing orbital mechanics with rocket science.
Orbital mechanics is what is used to do all the orbital stuff
Deep Impact was a NASA space probe launched from Cape Canaveral Air Force Station on January 12, 2005. It was designed to study the interior composition of the comet Tempel 1 (9P/Tempel), by releasing an impactor into the comet. At 05:52 UTC on July 4, 2005, the Impactor successfully collided with the comet's nucleus. The impact excavated debris from the interior of the nucleus, forming an impact crater. Photographs taken by the spacecraft showed the comet to be more dusty and less icy than had been expected. The impact generated an unexpectedly large and bright dust cloud, obscuring the view of the impact crater.
Man this event was almost 18 years ago !!
And THIS is exactly what generative text looks like. Is that ChatGPT or Bard?
My name was on that CD !! Thank you for covering this !
Provided it survived the impact, our names might outlast any monument made by any king on Earth.
Safety Trousers is on the Mars rover.
Awesome video and very well done!
This video is worth my subscription. Grade A Content
Comet Wild 2 was discovered by Paul Wild on Jan. 6, 1978. Overview. 81P/Wild (Wild 2) (Wild is pronounced vilt) if anyone else was curious why it was pronounced that way in the video
Calculate the rotation of the comet to make a precision photo, that was absolute insane!!!!!
Wonderful video!!!
Spectacular NASA!!
Love your deep dive videos about past space missions. Keep it up!
Also, I've been watching your channel for years then checked it now. Wow, you're raking in millions of views. Well deserved for such high quality content. Glad the effort paid off
Those super smart boys and girls at NASA, are some incredible math smiths.
You really have to hand it to them.
Think maybe you could post in the description a timestamp for where you start talking about the actual topic that's in the title of the video??? I will say this video is a nice 30 minute piece on the history of space flights, sattelites, comets, outer space and more. I'd just like the 30-second piece of video telling what the image NASA didn't want to see is.
"It will no longer be so mysterious or foreboding. They may even be the reason you're here today. And all it took to learn this was to catch the dust from one, and to punch another really, really hard."
What I heard is "To get the answers they demand. Humans are literally doing enhanced interrogation of celestial bodies."
Yeah, I'm thinking based.
This channel is just outstanding. Woulda been a top PBS show back then...
You add so much value to my life Alex. Thank you for making Astrum.
Life changing. Seriously. This channel is beautiful, elegant, and a wonderful experience
Excellent video. Informative. Thorough. Good for all ages.
R.I.P. Startdust-NExT. Thank you for all your hard work.
Working at one of the telescopes on Mauna Kea (from the office, not from the mountain) I may have been the last one to find out whether Deep Impact actually hit. I was just there to make sure that we could observe what actually happened, not to observe it. I only found out when I left the office that people at a neighboring office were cheering.
love how practical the mission is, but meaningful and brings a lot of feedback. its a small feat but an achievment still, now we can crecreate accurate simulations of impact craters etc
19:26 except for the failure in the parachute that caused it to "crash into the desert, not land.
Brilliant video mate. Keep up the good work. 👍
That video was amazing! I was always interested in space and space missions but had missed a lot of last years missions about comets to be exact! I learned more from this video that I hadn't exactly undrstood for many years....extremely well written and edited, very informative about the finer details, and gives a wonderfull view on our Solar System's comets! Many thanks for posting this great video, thanks!
I’m at UMD and one of my closest mentors was deputy PI on Deep Impact. The naming of the movie and mission was indeed a coincidence and kind of caused a few minor nightmares 😂
Another great video with attention to so many details. Adding to the material is your presentation of the commentary. Such a refreshing change from so many AI-generated commentary that use door punctuation and grammar as the source. Thank you.
Recovering the aerogel detector was so important, that they gave it its own re-entry module.
A very snazzy and cool bit of science that, kudos to all involved.
The fact they described them as 'gem-like' was really intriguing too. Made me go 'oooooh!' 😁
I have a piece of the Aerogel from the Stardust "Engineering Development Unit" on the Stardust Spacecraft.
We put the "EDU" Grid only sparsely populated with Aero gel through all of the environmental tests, then swapped it with the fully populated "flight unit" before launch.
They gave out the pieces in the EDU grid to the VIPs on the program.
My piece even has some of the "carrot tracks" in it from the hypervelocity testing before launch.
@@stuartgray5877 That is so cool. JPL would be a dream job.
That’s utterly fascinating! Thank you so much!
Imagine getting two grains of sand, spinning around in a large stadium, to hit each other. Now imagine it is much much much harder that this.
Phenomenal as always! Thank you :)
this was one of your best episodes, really good! subscribed a while back and glad i did!
1:24 the exact moment we avenged the Dinosaurs.
Titles like with this video tend to be clckbait, but I always look who uploaded before clicking and when I see Astrum I tend to think it probably isn't that much clickbait as it seems to be. Always love your videos and learned a lot over the years watching you.
This channel is always so awesome. I could watch it for hours.
Poetic narration. Enjoyable. Thank you ! ❤😊
Incredible engineering achievements! -Great video and nice narration too!
This was one of your best reports on probes to celestial bodies. I enjoyed it
Im sure this will be a great video.. thanx alex..💪💪👍👌
Amazing report, many thanks. very well researched, produced and delivered.
Excellent ! ❤
Our fallen explorer is still wandering the stars representing our collective efforts and we are proud and sad at the same time.
I love videos like this! Such interesting subjects, and such reverence and interest shown for the subject matter!
excellent video breakdown! i don’t particularly recall this entire multi-purposed mission (life was crazy back then), but wow! i also was able to do the quick calculations from your Halley’s comet date from my childhood: if i’m lucky, i might be witness to a 2nd flyby Halley’s comet at the (horrifying) age of 86! either way, at least i saw it once in my lifetime! thank you!
Him: "Now it finally rests among the stars."
Me: 😭😭😭😭
You have fantastic narration and research. Subscribed!
Thank you, I have learned so much. Thanks
Small correction @19:50: White and red "hot" is actually cooler than blue hot. Yes, the colors on the taps of most office water dispensers and household faucets are backwards. Red should mean cold while blue should mean hot. Thanks!
the "colors" of heat are generally a misnomer. it has more to do with the emission spectra of what is being heated or burned than the temperatures involved.
the reason we use red and white to describe levels of heat has more to do with the most common things BEING heated, than anything else. red hot was adopted since, the most common super hot things humans dealt with for a long long time was iron, copper, and other metals being heated for smelting and forging. red is the color most of these metals turn when heated.
when sufficient technology had been developed to forge hotter metals, or outright liquify former ones, white hot was dubbed. as metals heated to those temperatures emit a white light, to the naked eye.
tl;dr the colors of flames have little to do with why we call things white or red hot. and in fact the color of flames has nothing to do with the heat of the flame in the first place. a propane flame will be blue no matter how hot its burning.
Shut up, nerds!
@@foxboy64 You're confusing emission spectra with thermal radiation. Copper compounds typically burn with a green flame because copper's emission lines are predominantly green to our eyes, but when heated, copper glows red to white just like iron. These glows when heated are what @Sammasambuddha is referring to.
I worked on blue/red water temperature for decades. Red because your hand turn pink when it's been in hot water. Blue because your hands turn blue in cold, cold water.
i think the red hot and blue cold thing cane around because you can't see the light emitted by warm things until they get hot enough and red is the very start of that
and blue cold probably comes from ice being made of water which is often depicted as blue
NEOWISE was my first comet to observe
Easy one too. What made me mad was in the 1960s being told that Halley's Comet would be great and then couldn't see it in 1984.
Makes me hope my kids will end up at NASA or similar place.
Nice, most of these things on TH-cam are full of repeating fluff (not the aerogel kind). I appreciate your approach to reporting real science.
Thank you, this was fascinating!
7:34 is where this video starts
I wonder if we will ever be able to capture a comet and return it to earth and how it would react under earth conditions.
It would probably melt.
@@georgejones3526 We COULD return one to Earth ORBIT tho...
Seeing that it is so loosely held together and has so much space within it, being anywhere near Earth would squash it, or stretch it to pieces.
@@alphagt62 Earth would have a ring !
@@alphagt62Only if it falls below the Roche limit.
I love this content, keep going. 🌍
McColgan, you've done it again. This is a great video.
one video and now im hooked
Such a wonderful video. Too bad it was marred by unnecessary clickbait, which didn't influence me to watch the video at all.
"Let's crash into the sunny side so there is better lighting for our pictures" Then the sunlight on the crater heats the newly exposed ice enough causing the ice to melt and evaporate, creating a cloud of gas and dust so they couldn't see the crater at all. They are some of the smartest people on Earth. They can design, build, and send a probe to a small comet. But they overlooked the simple things. They didn't think about the effect of sunlight and heat on the ice inside the comet. The reason comets have tails. That sounds about right.
Plot twist: The impact was just enough to change its orbit which later resulted in a collision with Earth. Washington DC was obliterated.
So it was a win/win for everyone else.
@@tommynikon2283 PRECISELY!!!
Stardust's final message: "Tell my wife I love her very much, she knows."
I love science, its so great that we can learn so much by hitting stuff really hard.
I noticed that the narration from 11:07 to 20:58 is lifted basically word-for-word from the 2022 NewsBreak article "Stardust's surprising discovery by NASA" attributed to 'Science & Technology.' I did not see any mention of this article in the credits, description, or video. I was curious if you are affiliated with NewsBreak, as the website claims it is their original property over a year before this video. Cheers!
Edit: After looking further, I recognize that I failed to realize that this is a Supercut. Your original video containing this information actually predates the aforementioned article by 6 months. It appears they potentially lifted your original narration and used it to generate an article?
thank you for this! this channel used to be my go to when it came to space related news, but these things just keep happening and not to mention the clickbait titles getting worse.
@@Tip_Tupper I understand how you feel! I'm choosing to reserve judgement, as it's possible Astrum is somehow related to NewsBreak.
Also, I love your profile picture!
@@Tip_Tupper It appears I might have been incorrect. After digging further, it's obvious that this is a supercut of shorter Astrum videos. In fact, Astrum's original video containing this text predates the article by 6 months. It appears that NewsBreak might have actually stolen his narration line-for-line and used it to generate an article.
@@Tip_Tupper There is 0, count em, 0 words in this title that are clickbait. IF you failed to realize the images they didnt want to receive, were the images obscuring the whole point of the mission in the first place. Then jokes on you. Youre a tool
I seem to have missed something; which image was the image NASA didn't want to receive? Are you talking about the image of the dust cloud as opposed to an image of a crater?
9:30 the unexpected flash included ultraviolet light, which doesn’t happen so much with collisions of mass, however it is always present with electrical sparks. Even electrostatics sparks, which are very scalable… This large flash was very much expected by some (it was documented). This is really kindergarten knowledge when you are familiar with the electric universe model, but would make your head hurt if you’re not.
it did not include ultraviolet light
Wonderful work
Great stuff All around