"Probing the Dark Universe" - A Lecture by Dr. Josh Frieman
ฝัง
- เผยแพร่เมื่อ 5 มิ.ย. 2016
- In this one-hour public lecture Josh Frieman, director of the Dark Energy Survey, presents an overview of our current knowledge of the universe and describe new experiments and observatories. Over the last two decades cosmologists have made remarkable discoveries: Only 4 percent of our universe is made of ordinary matter - atoms, molecules, etc. The other 96 percent is dark, in forms unlike anything with which we are familiar. About 25 percent is dark matter, which holds galaxies and larger-scale structures together and may be a new elementary particle. And 70 percent is thought to be dark energy, an even more mysterious entity which speeds up the expansion of the universe. Josh Frieman is senior staff scientist at the Fermilab and Professor of Astronomy and Astrophysics and member of the Kavli Institute for Cosmological Physics at the University of Chicago. The Dark Energy Survey is a collaboration of 300 scientists from 25 institutions on 3 continents, which built and uses a powerful 570-Megapixel camera on a telescope in Chile to carry out a 5-year survey of 300 million galaxies and thousands of supernovae to probe dark energy and the origin of cosmic acceleration.
- วิทยาศาสตร์และเทคโนโลยี
I fell asleep and this is what was on when I woke up
😂
Same! 😁
Literally same and your comment was the first one I saw 🤣🤣🤣
Me too!!!! 😀😝🤣
Same here lmao
Fell asleep watching Wonderful Person and woke up here.
A guy in my dream was trying to sell me a car and he kept saying ‘because gravity is attractive, so is this car’
@vladimir putin is andrei panin jfk is jimmy carter bro lay off the meth. Michael Jordon said it best; "stop it, and get some help"
I'm so high this makes sense hahaha hah 😂😂😂😂
@vladimir putin is andrei panin jfk is jimmy carter you forgot one The Cake is a Lie 165
Ur boy anton!
@vladimir putin is andrei panin jfk is jimmy carter Seems like someone took something a little too seriously...
I love how everyone fell asleep and woke up to this.😂 I literally woke up with about 20 minutes left of this guy's lecture. So I guess you can say I watched it all.
you just turnoff yur device before sleeping, then you’ll never experience up with this.
@Seabreez 24
I don’t get it.
Why so much hate in comments? I find it informative. My nephew wants to be a astrophysicist. He finds it very useful. Thanx.
I fell asleep watching vsause and ended up here
Same
Same
I just got reccomended
This JUST happened to me
Wtf same
I fell asleep and woke up here after having an amazing vivid dream about stars, galaxies, clusters and the like, WOW super trippy this guy narrated my dream
Get out, I’ve just had the exact same thing lol
😂 same, LOL
Same 😮
Same :))
@@Chazza_1201 ooooom9kooo99ooo9oo. O9m9lo9koo9oo9ooo9oo9oooooooooooooooooooooo9om9oolooooo9o9ooooooo9ooooooooooo9oo. 9ooo9o9ooo9ooooo9o9booooooooooo9oookoo9oooooooooooooo99o9oooooo9ooooo9ol.oo9ooooo.o9ooo9kkkkooooooooooooooooooobookokحححح.٩ححححححححححَح٩٩٩حكحح٩ححككك.ححححك٩ح.حرححححَحححكححححححح٩٩ححح٩حححَح٩ح٩كح٩حكحح.حححكح٩حححححححححح٩حححححححححح٩حح.٩ححح٩٩كَحك٩حححح٧كحح٩٩حح.حححرحح٩٩ححححَ٩٩كححح٩حح٩ح٩٩ح.ححح٩حهحكححححكحححح٩ححححرح ححكححح. حححححكح. ح. ححح٩ه٩حححح٩حححح٩حَ. حح٩ ح. ححح٩ححكحح٩حح. ٩حَححححححمحححححححح٩ ت٩حححح٩٩ح٩٩٩ك ٩حَ٩ح٩حححححككحكك.حححرححححححححك٩ححححمك.حكحححححححححح٩ححححكحححح٧٩.ححكح ححححمح. ح٩حححح٩حححححرحححح. حححكخحكحححرمححرح. م٩ححححرححرحح٩ح٩ححح٩ح٩ححح٩ححرحح٩حححمحح ححكححح. ح٩حححح٩حححححرحححح. ححح٩ححكحح٩حح. ح٩حححح٩حححححرحححح حححححححححححكححححححححمخحمحححححححححححححححح
No matter what i decide to have on in the background before i sleep, autoplay always directs me to this around the time i wake up.
That's gonna give me nightmares....nice!!!
TH-cam literally plays this video every time I go to sleep. It's the only video that TH-cam knows I've already watched that TH-cam autoplays for me and it does this every night!
Same
Same. It’s an unintentional ASMR!
same.
Congratulations to the producers, who were mindful of the needs of the remote audience (via TH-cam, etc).They made sure that we saw the slides and heard the audience questions just as clearly as the auditorium attendees.
Bot
True that. Rare gold standard
It always disappoints me that major learning institutions, who must have an audiovisual department, find it so hard to produce quality videos.
Nobody saw the slides. They were all asleep apparently
99
3:45
Thank youu🙏💛
Thank you very much
I have passed out watching various space themed videos a dozen times and always end up here. This is it. This is the space video boys. It’s probably entirely recorded in my subconscious by now.
All you need now is some hypnosis
That's exactly how I ended up here also.
I swear every time I wake up anymore I see a long ass space related video. Every morning, without fail, for like a month now. No matter what I fell asleep watching.
Long team schedule
Anyone else fall asleep and wake up here?
Just did.
@@SleestaksRule cool
Yea duuud, this gave me some really crazy dreams too
@@TheGoofygangsta Same. Falling asleep to TH-cam is always weird for me
@@thomastakeshita4979 Haha, This was a good one. I let it go until I wake up 10x smarter.
I never leave autoplay on, but I too woke up to this after falling asleep watching something else. Kinda weird I guess, but I'm subscribed and it is nearly 2 hours long.
i love you!
@@kajjjjjjjj Spreading Fake-Facts and Misconceptions about People with Disabilitys is maybe not the most common problem but a problem still.
th-cam.com/channels/-QmN3iF9lORMn8BxkqeB4w.htmlabout
Please do report this Person, as he is very Vile.
Random comment? Yes. But whatever... please help.
If this comment here does not contain any Link or URL,
then youtube glitched out again and I'm sorry for making a rather
nonsensical comment...
...
Same!
you just turnoff your device before sleeping, then you’ll never experience up with this.
Apparently this whole video played in my sleep last night, would never have known if i hadnt seen my history just now
I fell asleep listening to this and dreamt I was a secret agent transporting an astrophysicist to a new telescope in Chile while an underground evil organization was trying to kidnap him and he was explaining vacuum energy along the way. Awesome dream, good job brain.
O
Same, I fell asleep listening to Art Bell.
Fell asleep and woke up to this
Thank you not the only one
...i'm so confused I feel asleep watching something and I wake up to this
I fall asleep to youtube videos every night and always wake up to rando documentaries like this as well! It's like Netflix's "Are you still watching?" but instead they just yeet space documentaries in after 2-hours of "Up Next" videos
HAHAHAHAHAHA I DID TOO. found this in my songs playlisr
same lol
I'm on the same page here.
Haha sama
It's so bizarre how TH-cam has chosen to provide this video to our sleeping subconscious. I woke up to this too, then read the comments about so many people waking up to this playing, and that's when I even realized that I woke up to it too and was really freaked out. But now I put this on as I'm laying in bed trying to go to sleep. That's called a checkmate, TH-cam.
I didn’t wake up to it but it was playing when I got back to the iPad...I did mention the cosmos in a previous post so it’s possible that Google algorithm is hard at work, learning who we are and feeding the AI machine🤨🤔
Be my 14th "recorded" time waking up to this lecture. Gave it thumbs down in hope it would stop it.
It hasn't worked. Don't know how to stop it being in my recommended either.
you just turnoff your device before sleeping, then you’ll never experience up with this.
I just woke up with this playing
Probably the reason so many people wake up to this video is because its so long. Over an hour
I fell asleep watching something else about astrophysics,and woke up to this,almost in the middle of the presentation.This was the first time viewing this vid.
Yes indeed I fell asleep and this was on.
Just happened to me last night. Now I'm going to fall asleep to this and wake up somewhere else, see you there!
What auto play led me to at 3am, when I woke up this was playing... Does that mean I'm clever!?
Yep me too
@FIRMALAB 28 years Ago I fell asleep to pbs space time then woke up to this
Wtf did i fall asleep watching to end up here? Wow
Holy crap, I guess you tube is pushing this video to everyone in their sleep.
literally just woke up to this
This be my 4th time in a week lol. May have to thumbs it down so it will stop.
I would assume the mad amount of bot generated comments is making the algorithm think this is a super-trending video.
@@dw300 how can you tell there's bot generated comments?
I start out with pbs spacetime and end up at fermilab. I have no regrets.
I've watched this several times. I've liked it, I've disliked it, I've commented, I've told TH-cam "stop showing me this", and it still comes up on my recommends EVERY SINGLE DAY.
Very weird. Have you reported this as a bug?
Fell a sleep to this and woke up to this, it was a quick nap
you just turnoff your device before sleeping, then you’ll never experience up with this.
I’ve seen this video before and always thought everyone was trolling but I literally fell asleep last night watching something else and now I woke up and this was on
I just woke up to this 5 minutes ago!
omg the entire comments section is about waking up to this, wtf.
@@inthefade Me too; it's 4.08am UK time.....woke up 5 mins ago and there it was...
Same here...but I'm not complaining
Uhhhh what
@@MrBoybergs p
I am subscribed to this channel. I viewed this talk twice, without sleeping.
I fell asleep and after hours this was what I woke up to. So I’m going on an adventure to see what videos came before this by clicking the left arrow. Wish me luck👍
i too fell asleep and woke up to this
This is so much better than regular media I'm canceling my cable
I dont usually comment but I just woke up and this video was on
I fell asleep and when I woke up this was playing
you just turnoff your device before sleeping, then you’ll never experience up with this.
I dated a particle physicist from fermilab but it didn't work out. Lots of little things kept getting between us.
So we've known about dark matter for about 80 years or so and we still have no freaking clue what it is?! Awesome. I'm on it.
Dark matter..is 1990 idea...and not one sample...so it's conjecture..about high energy physics...so very much not 90 years 30 years...and it's black- I have a geologists hammer..first test ,slap it with a hammer...this is a new real thing ,that will never get the hammer test...can't.
Gary Mingy untrue my guy just look up fritz Zwicky. He made the first observations that were caused by dark matter long before anyone had any clue what was going on. Then Vera Rubin confirmed it later in the 70s or something like that. Dark energy is a 90s thing tho
It's b******* the Earth is flat. I find it funny that most people fell asleep and then ended up here so did I. Brainwashing since we've been kids. When you wake up to it and you realize how badly we've been brainwashed. You realize The Truman Show equals the human Show. Yep we've been totally duped
th-cam.com/video/qEaHjPF47_E/w-d-xo.html
" This adds a great urgency to this kind of study, we need to find them now because we only have 100 Bil.years." Fact wrapped in great humour !
I don’t even remember watching TH-cam to go to sleep and yet I woke up to this
you just turnoff your device before sleeping, then you’ll never experience up with this.
I apparently listened to this whole thing in my sleep. Auto play is magical. I kinda want to know what I learned though.
Same bro
Who else fell asleep watching vsause and then ended up here
I fell asleep watching Exurb1a.
I fell asleep watching this and I woke up 1 hour through this It is 7 in the morning and this is the earliest I have woke up on the weekend in the past year
Oh, is that so.
Awesome lecture! Learned so much in this couple of hours.
Best educational lecture, on the above, so far,. Well done sir, wished we had a lecturer like you!!
The more I listen the more I learn. It is as if Im listening to a never ending story and learning at the same time! Thank You👍.
When your calm,sink with your true natural frequency,and breath with your song you share w everything around you by haveing a gift called a heartbeat,you harmonise on every level with your uni--1...verse-words,a writeing,or...a song!,We all are learning,some for the first time with a gift all of us are part of,each,a song,each diff.,but in our hearts,were all the notes that create the song that together,flows thru all,all will be beautimuss,we all win,kindness,patience,greatfullness,understanding,and truth..now thats gonna be one song to heal the world...Good luck!,Dont give up,its just getting good,...💚😎
I was asleep and when I woke up I was on the last 10 mins of this video. I hope at least I learned some thing
you just turnoff your device before sleeping, then you’ll never experience up with this.
Video starts at 3:45
so glad i woke up to this playin on my youtube it was really enjoyable to listen too. thanks for uploading
Fell asleep watching something random and had a dream about being in an astronomy class and woke up to this playing
Things you hear or experience in real life passes on to dream world. A pain in a random part shows up in the dreams too.
Best lecture yet on the subject. He does it with flare and ease. Great lecture.
@@jamescollier3 I will do. Thanks.
@@jamescollier3 ha. Yes I have. Woke up to him one night ....good stuff.
I watched this an hour ago and fell asleep and woke up last week.
You forgot the part 'woke up to this video' 😂
This stuff fascinates me soooo much! Too bad I grew up in the hood and had to do things to survive that took my scholarships away when I was 18... Biggest regret in life and i'm 33 now.
@Chief Brody I knew someone who used to break into peoples houses for food as a child, because otherwise they would go hungry. I am not commending this behavior, but can you really fault a scared and hungry child who lacked a positive support structure?
Try, Ken Wheeler explaining Plato's Field Theory. He has over 2000 videos on Field Theory. Took me awhile to understand his vocabulary. Then, I understood how the Universe works. Did take years, now I understand.
Time began when the Dielectric energy decays/leaves the Inertial plane/Bloch Wall, inflation.
Then, the Dielectric energy decays into the Dielectric Voidence Field/Magnetism, the Grand Expand. Magnetism gives Magnitude to the Universe.
These are the transverse waves that EM waves travel on/in. Both transverse waves are needed for light, EM waves to travel on/in.
Gravity is the opposite; Magnetism into Dielectric Energy, then onto the Inertial plane.
What I think I learned from Ken Wheeler and Eric Dollard.
Good Luck!
Sometimes you got to do what you have to do! Not always your fault. Don't give up, it took me decades. 2 years of Electronic Technition and 3 semesters of Nanotech. They taught my their lies. I learned Field Theory from Ken Wheeler and found the truth about our Space Universe. Dark Matter is opposite Matter in Counterspace.
Aether Field Theory is correct.
Light doesn't move, it's perturbations of the Aether Field. Compression, FLASH, so called photon, Rarefaction.
Watch, The Slo Mo Guys, "Light at 10 trillion FPS".
Maybe you are lucky you didn't have to learn THEIR lies first!
There aren't particles everywhere. Duck here comes a particle, yeah right. It's all Aether Hyperboloid's and Vortices, surrounded by Toruses of Magnetism.
I fell asleep and woke up and this was on
The best doctor of sleep in the universe. I feel like a new man
woke up to this....
wtf where am i?
So uh I fell asleep like at 12am last night this is what I woke up to
I fell asleep and my phone kept playing and this became apart of a dream I had...)
I woke up to it... I don't remember my dream though.😐
me toooo!
@@minahannah1385 Same for me just now. I was in the dream. Was so cool.
I slept off in another multiverse and woke up here
i’ve done this too many times
You should really go back to sleep and to go back to yours because this ones a mess right now..
Ha me too!🤣🤣🤣
@Jon Smith Flat earthers still kickin' around eh?
! ^
I fell asleep last night and this was on my page to this morning when I woke up.
Same here
OMG!! This is the second time I woke up to this!
you just turnoff your device before sleeping, then you’ll never experience up with this.
Got baked, passed out and woke up to this video
Most of this comment section surprises me. Not the usual crowd for these subjects at all.
From a cursory read of many comments and their timestamps, it seems like a couple of months ago, some quirk of TH-cam's algorithm started steering the "random" walk for many towards this four-year-old video
what do you aspected?
wow, seems like the youtube algorithm decided to send this video to a lot of flat earthers recently XD
With all the people claiming they fell asleep and woke up on this video, I guess we can say with certainty that we’ve found one of TH-cam’s Great Attractors
2.5 million views and they are probably all from people who fell asleep and woke up to this video haha
😂
😂😂😂
th-cam.com/video/-Px1ILh0iCw/w-d-xo.html
Hahahaha 🤣😅
😂😂 so true
This has to be one of the best Lectures ever on the Universe and its secrets ...Amazing knowledge .....ohhh and some witty Comedy to boot.
Many thanks for this Tremendous posting.
Why and how does youtube lead us to these lectures when falling asleep. Thats the biggest mystery
Take it as a hint that you are looking at the right things on TH-cam and educating yourself. You can mark a channel or video with "not interested" on the video or "don't recommend this channel" but really if you have the time they are worth watching from time to time.
Fell asleep listening to an NDE account. This is the video it was on when I woke up.
Lool
God is Love, Love created the universe and us so we can learn how to bring forth more Love...
Our only Refuge and Hope is in the Son of God. He spoke Truth Forever. Please Forgive, and Pray for everyone...
th-cam.com/video/-Px1ILh0iCw/w-d-xo.html
comment section:
collective sleep group randomly wakes up to this video
I
Okeedokee o
TOO funny 😂😂😂
How much did they get paid🤣💯💯💯
@vladimir putin is andrei panin jfk is jimmy carter still doesn’t make it flat
@vladimir putin is andrei panin jfk is jimmy carter you'r on to something dude. Keep looking in to it.
Yeah just woke up, weirdest dreams, but had a Eureka moment. It's like I've just taken the 'Red Pill' because I now know what gravity truly is, and it's so staggeringly obvious!!!
@@nebulosity1 Unfortunately, no one can be told what gravity is? You have to SEE it for yourself!
@@michaelcurran5692 The scene transitions to the roof of the skyscraper ;)
Woke up to this, gave me really cool dreams. Thank you.
you just turnoff your device before sleeping, then you’ll never experience up with this.
This was playing when I awoke from the weirdest (and seemingly longest?) dream I've EVER had. Should I be worried? I fell asleep watching a video about the JWST, woke up to this.
ha ha ... me too
I just woke up too. Weird.
I didn't mean to imply it wasn't interesting. In fact, I have watched it in full previously.
Yo wtf just woke up and saw this playing too wtf it was 50 minutes in…
Uhoh this video spun a spell within your mind and now you contain the very secrets it hides. Now only you can unlock this information so well done you managed to implant the world's most mysterious thing and now you'll just wonder......∆
you just turnoff your device before sleeping, then you’ll never experience up with this.
i fell asleep at my computer last night and woke up with this playing and less than a minute left. i dont remember having another video playing but my history shows this plus another video that played it’s so weird
I think this mass collaboration of resources is going to prove to be fruitful as time moves forward. LIGO and the optical lens looking at neutron stars will prove to show optical counterparts to gravitational waves. It’s exciting and refreshing to have a class full of sponges absorbing all of this wonderful material.
Did anyone else actually start watching this intentionally? Although, I am putting it on to fall asleep to
i did? i'm a nerd.
I picked it then found how much the human race would rather just say god did it end of topic. How did I get here gif did it why is the sky blue gods favorite color
I fell asleep watching vsauce and ended up here and man did it mess with my dreams
He may spell it differently, but I still sleep better at night knowing that a Doctor Freeman is protecting us from the impending resonance cascade.
Wake up Dr Free Man...
kudos to you brother them animated videos you found were really convincing thanks for being so convincing you really did your research!!!
These people are Highend scientists who've dedicated there lives into finding answers to this truly bamboozling subject ....why people in the comments are so negative about this presentation!
I would like to see you give this a try!! yess we really haven't sussed no were near the proper understanding of the cosmos and never will ,But comeon this man needs credit for his brilliant input and the way he carried us lot through this .Hats of to the man ! I'm fascinated with space as you will too let's just admire the little we know about it and what these people have achieved, I think it's great !!!
Just saying !!! Regards England.
At 3:43 the actual lecture begins.
You are a hero
Hmmm, so now we know what PhysicsPolice is there for ! ... OK
That wasn't a lecture , it was begging for funding to find nothing, again.
I slept watching blacksmith videos and woke up to this video, and I am glad this happened, this video is awesome.
Great content - and presentation - subscribed!
Am I the only one who did NOT fall asleep and wake up to this, but actually got here from recommendations ?
Me
He’s boring thi
I am sorry to say this Mr. Frieman but TH-cam seems to think your lectures are very conducive to sleep. TH-cam's algorithm is throwing your video on when people fall asleep, me included. It is quite soothing, this was a hit by the algorithm.
th-cam.com/video/NqR9WzEDcUY/w-d-xo.html
I went from turning toilet paper into moonshine to this
It always takes me from Nilered to this
Like many others, I’ve fallen asleep listening to other channels and ended up here. Now, to be fair, I would probably watch the video if I was awake, but it’s very interesting so many of us ended up here lol 😂
3:38 YOU'RE WELCOME
Youre'*
This was super informative!
This could've been started at EXACTLY the 43:00 mark and been more relatable to the mass audience. I know this wasn't created for that, but the iceberg analogy slide followed by the discussion of the increase of dark energy as the size of the universe enlarges were the most concise and informative bits of his talk.
Probing space includes probing Uranus.
Boo to anyone booing this great present. Lots of great information helping us to visualize and appreciate everything everywhere.
Just ignore. Trolls, and Bots. Many not even real people. Many are kids in Chec Republic. Paid for by Russia to ‘gaslight’ science. Goal is to polarize USA citizens.
Lovely presentation.
@@KimBTown nah, people just aren't falling for irrational BS anymore.
Anybody else mysteriously wake up to this video?
Me, right now,, though I went sleep with earphones and TH-cam on. So it's not that mysterious. The video is quite long.
@S M You could wake up to any video it's not weird if it happens once to a person. It would be weird if this video was always playing when you wake up. I woke up to many different videos in the past. For some reason some people write about it under this video, maybe because it became a main topic, but it doesn't mean they don't wake up to other videos. You don't have statistics of people waking up under every video.
@@jwfa6695 Actually no. There are videos that will never be recommended and autoplayed. There are also videos thqt are more likely to be recommended.
One of the best lectures!!
No, I'm planning to sleep listening to this because space videos make me sleep
Great lecture.
Never seen such a good lecture on probing before!
this is incredible lecture. Thank you.
Wow, many of the commenters remind me of medieval peasants, wanting to burn someone for performing witchcraft (or knowing a little too much science).
TH-cam is a dumpster fire. Luckily they all waste their time spewing shit in the comments while the grown ups are busy actually contributing to society. I'd rather they were here than wandering around outside bumping into normal people
This guy worked hard on his presentation and is clearly infatuated with astronomy and loves it, stop roasting him his jokes were funny.
I'm one of the few that did not wake up to this video.
I was doing some general relativity & time dilation research. This popped up in my video feed.
Same here bruh
ngl great and interesting topic. if only i was actually awake at all to listen to it
Love this. I thought he could have explained the age of the universe versus distance we can see better. Space is expanding because of dark matter and the universe is expanding therefore knowing things are expanding in different directions it's like two cars starting from a point. If they race off in different directions they are twice as far from each other as they are from the point. Then make the road expand in between the cars as well and you soon have a huge distance between the cars.
Question - If the universe is 13.8 billion years old, how are we seeing light from stars 30 billion light years away?
Wouldn't that mean that, that starlight started on its journey towards us 30 billion years ago, making the age of the universe at least 30 billion years old?
I wondered this myself. After having always heard nothing exceeds the speed of light, there is one thing that apparently does- inflation. The expansion of the universe is occurring at faster than light speed. That’s the only possible explanation as to objects being further away than 13.8 billion light years.
There's a consideration to make in this question. Are we talking about a static universe? Cause then ur right. The universe isn't static though. It extends, light bends. Consider that we're looking back in time basically the lights u see now is where it came from approx 13 billion years ago. This means the actual distance ur looking at a certain thing is not the same position as it is right now, even though this is hard to comprehend. U can however see the difference in velocity compared to earth. Which makes it possible to calculate approx where things are located at this time. Basically your not only measuring location but also time. Considering there's expansion of the universe the distance could be more then double that far.
The universe expands faster than light, and the expansion makes the wavelength of that distant light elongate to another frequency. That's why red shifting happens and that's why the oldest objects can only be seen in radio waves.