West Coast of Ireland. Twilight lasts a long time. It's lovely especially when I'm out in the country away from the light pollution. Cloud cover can be an issue and make's it seem darker, possibly just because you are getting rained on at the time.
Flat Earthers are currently arguing over an upcoming event called 'the final experiment' where flat earthers & normal folk are invited to Antarctica to see the 24h Sun in December (impossible on a flat earth)
Lol Neil called him in while he was on a date with the wife... "Chuck get down here, I figured out how to tell everyone about nighttime" "Neil I'm celebrating my anniversary"...
I think it references that one feels emotionally darkest before the dawn. When a person is troubled and trying to find hope, after suffering in the dark for several hours, the time before the sun comes up FEELS the most hopeless.
I'm not sure it's even that incorrect. Twilight encompasses both dusk and dawn, and what they're discussing here could also be called dusk. Dawn is defined as the first appearance of light before sunrise, so the 'first appearance' of light implies that there was first an absence of light. That said, there's even more to it when you fully understand what twilight is. When you hear, "it's darkest before the dawn," you might presume that the dark at some point felt unbreakable, when in reality the deepest darkness of night breaks much earlier (in the astronomical dawn) than one may assume (such as in the nautical dawn). It truly is an onion of a concept, layers upon layers of poetry to align with our emotional experiences. I like to see it as a conveyance that hope can be found even in places you have yet to perceive. On the other side, astronomical dusk could equate to the human nature of nurturing hope in a hopeless situation. We instinctually refute futility and strive to endure, carrying ourselves through the dark believing the light will shine again. Now, if you reversed the term to say, "It's always brightest before the dusk," then we're probably talking actual nonsense lol
@@drewharrison6433 but it is not the darkest before the first appearance of light, since sun is closer to you just before dawn than at midnight, unless the brightness is the same at both.
I love how often the ISS passes directly overhead where I live, often just after sunset, so I can see it very clearly - because it is still getting sunlight. I live in Middelburg, The Netherlands.
Dr. Tyson, I have a B.S. in Biology and have a different take on the phrase darkest before the dawn. Of course, you are correct, It is not darker before the dawn. I posit the phrase should be amended to. “It is hardest to see before the dawn.” The human eye uses different photoreceptors to convert light into electrical signals for brain depending on the amount of available light: The more numerous rod photoreceptors are used for dim light. Alternately, the cone photoreceptors are used for brighter light and is what gives us color vision. During twilight hours, your eyes are shifting from one photoreceptor to the other making it more difficult for your brain to differentiate the conflicting electrical signals in the brain and thus making it harder to see which seems darker. (this is also the case for when the sun sets; I try not to drive during twilight hours)
You should also mention that the moon does not emanate its own light it reflects the sun light. Because of that vampires would not be able to go out during the moonlight because they would burn since they would be getting sun light
@@mcmosfet2856 Are you serious? By the way, they are as real as any of these so called "gods" humans believe to exist. And the problem with this world is that they "exist". They only exist in the minds of those who believe them to exist but, they are there. So, what is your point? Do you understand the concept of humor? You just assume everyone in the world is as disconnected from reality as trump? Or is that a humorous comment to a humorous comment on a very interesting video? You know what? It does not matter. What it matters is that you made a comment and that is cool. Cheers.
But if it's the UV exposure that's harmful to vampires, a full moon in perfect conditions only reflects about 1/400,000th the light of the sun, so they might just get a slight tan from the UV. And if they can't withstand any UV exposure at all, they wouldn't survive turning on light bulbs at night, because those emit small amounts of UV too. Even flames emit small amounts of UV, so it's time for all the vampires to throw away their fancy candelabras. It's not easy being a vampire...
This made a lot of sense. When watching the English Premier League football (soccer), you find a game starting at 8:30PM and you still see some reflection of the sun. That has always caught my attention. Very well explained.
Great info. Being a Polit years amd years ago we had to know when legally a daybreak was if you werent rated to fly at night....it was a lot earlier than you thought. Sake with nighttime. If there's light...you can have a flight.
The Army taught us BMNT and EENT, (Begin Mean Nautical Twilight & End Evening Nautical Twilight) do you just group those times into Twilight? You guys Rock!
The military even has to define dawn and dusk in terms of referencing BMNT and EENT. Recognized as times when you can more or less operate, and also as times when you're more prone to accidents.
I'm watching the trademark Arizona pastel sunset as we speak!! And today is finally the day that the days and nights are an even 12 houirs each. But there's technically 12 and 2/3 hours of usable light.
Burning question: If Alpha Centauri is around 5 years away and your light sail travels at 1/4 the speed of light, it takes 20 years to get to that star. My question is, how much time does the sail experience getting there? Doesn’t it experience less time due to general relativity?
Before I continue, I must say that I am simply an observer who enjoys this content, not an expert, and I had the assistance of chatgpt with the quick maths! According to what I found, an observer from Earth would see the 'sail' or 'ship' travel the 5 Light year gap in 20 years when traveling at 25% the speed of light. The sail itself, or observers on the 'sail' or 'ship' would experience time slightly faster, experiencing 19.36 Years during the trip. So the short answer is yes it will experience less time due to general relativity.
I grew up in Fairbanks Alaska....Evey year we'd go camping in the hills to watch the sun NOT set on the summer solstice. It was pretty amazing to watch. The Goldpanners baseball team would play a game starting at midnight and didn't need the stadium lights.
I was just in Alaska visiting the end of June. Mostly in Anchorage and it never got below nautical twilight when the sun set before the sun rose back only a few hours after. The one day I spent near fairbanks it pretty much stayed at civil twilight when the sun set only for what seemed like an hour or 2.
In astrophysics, the universe operates on scales and principles that challenge our everyday understanding of reality. Concepts like dark matter, black holes, and the expansion of space itself remind us that we’re only scratching the surface of what lies beyond. When we look at where the sun never sets-such as in the vast, boundless depths of the cosmos-it's a poetic reminder of the constant motion of celestial bodies and the ever-changing nature of the universe. Each discovery pushes the boundaries of our knowledge, but also humbles us, as we realize how much more there is to learn about the cosmos and its secrets.
I spent 5 years in the UK working on U-2 aircraft. I was on mid-shift 11pm-730am. In the wintertime I didnt see the sun for a few months. Couple of panic moments when you wake up at 4 and arent sure if its am or pm.
I saw the launch this morning in Florida while driving at 7:20am; it was cool seeing the rocket cast a shadow ahead of its self due to the sun being still below the horizon, but illuminating the atmosphere.
Two thoughts. For those that sneak, BMNT (beginning of morning nautical twilight) and EENT (end of evening nautical twilight) are important times and I have heard the old saying as "It's always coldest before daybreak." It often is.
Here in Denmark, we may not have hours of twilight, but when we travel south to Spain or Italy, we sure notice the difference. Dark comes really fast in those latitudes. Thank you for the explainer, and thank you Lord Nice for your crazy funny jokes. It reminded me of the American logistics officer that said about the civil war in ex-Yugoslavia - "They call it a civil war . . I don't see anything civil about it". He was right there.
Thanks a lot. I have been depressed because we passed the fall equinox and are only getting 12 hour days I live in Ottawa and on June 21st we got 15 hours 40 minutes of daylight. I hate winter. But summer twilight is the best. Especially in a boat on Lake Ontario.
1) Professor given the astronomical twilight do you start your observation or do wait for astronomical twilight to pass because I assume the darker the better. 2) What will the best place on earth be to do the observations with no light pollution. 3) Does 6 degrees in each phase account for about an approximation of 15 minutes?
I already understood this, but during a twilight return to Florida from NYC, I could observe that it was dark on the ground/ocean below, yet the clouds surrounding my plane at 35k feet remained illuminated and twilight was very prolonged.
At 7:02 , that’s the Mole Antonelliana in the city of Torino (Turin) Italy, what an interesting subject which by the way is at 45 deg 04” North latitude.
Thanks for the explainer! I always knew this (a friend who works on a ship told me this some 20 years ago), but today I looked up my location and found that the last day of this year when there was no night at all (ie the sun never dipped below 18 degrees) was 2nd August.
I had to check to make sure and yes, Cinema Sins TH-cam channel did a Back to the Future video and they gave a "sin" to the scene where Marty is driving the Delorean in the Peabody's driveway. By the time he gets to the main road it's already sunrise. LOL
1:45 I don't know what to say but I really discover this by my self. In the evening about 6.30 the sun was covered with clouds and there were clouds which were orange in colour and it was beautiful and i just thought about this thing that even after sun is Coverd with clouds, the clouds act as a light defuser and those orange clouds acts as a lens which diverges the light ray from sun which is covered by the clouds to ground.
I think the reason for those movie scenes were because they wanted a dramatic effect on film. Because at one time color film would record low level light when digital did not. But also some filmmakers simply start filming at night and finish at dawn. They don't do private screening before finishing production. The don't see the flaws until the public complains. I remember a can of Pepsi in Game of Thrones...nuff..said
I can remember having English watercolour paintings of sunsets & rises from the late 1800's with striking colours, from the volcanic ash, that went round the World, from the 1883 volcanic eruption of the Krakatoa volcano in Indonesia.
I found out about this in 2021 before going to Iceland in December as I needed to know how much light I was going to have for driving to my next destination.
There is a saying amongst the Irish peasantry of long ago that 'it is darkest before dawn' is meant to inspire hope under adverse circumstances:- “Remember,” they say, “that the darkest hour of all, is the hour before day.” Darkest before dawn is a metaphor in that it compares 'the problem' to darkness and the eventual solution or ending of the problem to the dawn.
@startalk I watched the most recent episode of Futurama & loved Neil’s cameo! I died at the end when Neil needed to hide so they put him in the science section of the books. I was thinking to myself, I know Neil died laughing when they read that part of the script to him. 😂
When the news report the sunset and sunrise time is this when the next 6 degrees start? Also can we figure out how long it takes for the 18 degrees to start?
You need a calculator that takes into account your latitude and the time of year, in order to be able to figure out that information. I’m sure they’re out there for astrophotographers, but I’m not personally acquainted with them.
I like seeing how the light shifts on Svalbard. Civil twilight is picking up momentum now, after the equinox, and nautical twilight just started happening. At some point, civil and nautical twilight will last 24 hours. I don't remember if astronomical twilight hits the 24 hour mark before starting to shift back the other way.
Neil, I have always been curious about the answer to this question. As an astronomical lamen, everything beyond our own planet is fascinating to me, but you as an SME in astrophysics, what is the one thing in the cosmos that still leaves you awestruck? In other words, what's the one thing you would consider the "coolest" object/entity that YOU have ever visibly seen beyond our own planet?
I grew up in a small village 200 kilometers north of the arctic circle, in Sweden. So for me, seeing the sun in the middle of the night, is not very interesting. 🙂
Do the different twilights roughly coincide with light hitting the differing layers of atmosphere- ie civil/troposphere nautical/stratosphere and astronomical/mesosphere?
As someone with a telescope Civil: Telescope setup Naughtical: Telescope alignment Astronomical: Cup of tea and chat with fellow astronomers Night: Camera time
Incidentally, photographer Nick Carver recently published a fascinating video on how light goes from harsh to soft to harsh again during sunset and dawn. Truly A+ stuff.
We actually went out to the field to locate positions at this second Where the old surveyors Did their solar observation and calculated numbers. I was a instrumental aide in civil and surveying technology 1986..
![ตีสิบเดย์ [FULL] | เปิดใจ "อาจารย์ เบียร์ ฅนตื่นธรรม" นักสนทนาธรรมสายดุดัน!](http://i.ytimg.com/vi/vqaBI_mnoDk/mqdefault.jpg)
What's twilight like in your latitude?
Worthy of daily encores. ;-P
In my latitude of 450 feet above sea level Venus looks amazing here in Hormigueros Puerto Rico
West Coast of Ireland. Twilight lasts a long time. It's lovely especially when I'm out in the country away from the light pollution. Cloud cover can be an issue and make's it seem darker, possibly just because you are getting rained on at the time.
Flat Earthers are currently arguing over an upcoming event called 'the final experiment' where flat earthers & normal folk are invited to Antarctica to see the 24h Sun in December (impossible on a flat earth)
At a latitude of 42 N it'll take 94 minutes from sundown to the end of astronomical twilight (all 18°)
Dare I say thanks for shedding light on this?
Chuck decided to be extra zesty today 😂
That's not zesty, that's all the way out the closet 😂
Annoying.
I here for astronomy.
Ignore it if that bothers you 🙄@@artdonovandesign
It almost looks like he had a lil bit to drink before filming this one.
Lol Neil called him in while he was on a date with the wife...
"Chuck get down here, I figured out how to tell everyone about nighttime"
"Neil I'm celebrating my anniversary"...
Been watching these two for years now. They never cease to amaze and educate me. Thank you gentlemen
Chuck the real man of commedy,always balances the conversation's with Tyson,makes the conversation more attentive😀
Chuck is on 🔥 today. We love you bro. Yeah, you too Neil. 😊
Chuck looking very sharp
looks a little uncomfortable in those extra tight pants
Chuck is beautiful
2:54
"It's darkest before dawn" is such a poetic sentiment tho.....Perhaps the more accurate version of that general idea is 'it's coldest before dawn'
But the saying is, it is coldest at the dawn dip. Which is at dawn. 👀
I think it references that one feels emotionally darkest before the dawn. When a person is troubled and trying to find hope, after suffering in the dark for several hours, the time before the sun comes up FEELS the most hopeless.
I'm not sure it's even that incorrect. Twilight encompasses both dusk and dawn, and what they're discussing here could also be called dusk. Dawn is defined as the first appearance of light before sunrise, so the 'first appearance' of light implies that there was first an absence of light.
That said, there's even more to it when you fully understand what twilight is. When you hear, "it's darkest before the dawn," you might presume that the dark at some point felt unbreakable, when in reality the deepest darkness of night breaks much earlier (in the astronomical dawn) than one may assume (such as in the nautical dawn). It truly is an onion of a concept, layers upon layers of poetry to align with our emotional experiences. I like to see it as a conveyance that hope can be found even in places you have yet to perceive. On the other side, astronomical dusk could equate to the human nature of nurturing hope in a hopeless situation. We instinctually refute futility and strive to endure, carrying ourselves through the dark believing the light will shine again.
Now, if you reversed the term to say, "It's always brightest before the dusk," then we're probably talking actual nonsense lol
@@AuralAzureThis is what I came here to say. Dawn is the first appearance of light, not sunrise. It is darkest before dawn.
@@drewharrison6433 but it is not the darkest before the first appearance of light, since sun is closer to you just before dawn than at midnight, unless the brightness is the same at both.
Civil, Nautical and Astronomical...got it! Thank you Neal!❤❤❤
And breaking dawn.
I love how often the ISS passes directly overhead where I live, often just after sunset, so I can see it very clearly - because it is still getting sunlight.
I live in Middelburg, The Netherlands.
Thanks, Neil. Even at 73...Always delightful learning something new every time you speak!
I love Science!
Neil thank you for being a great teacher!
0:13 LOL...Neil's face!
"I don't have time for this today" Neil's Face
This is perfect timing because we just learned about twilight in my astronomy class today!
Dr. Tyson, I have a B.S. in Biology and have a different take on the phrase darkest before the dawn.
Of course, you are correct, It is not darker before the dawn. I posit the phrase should be amended to. “It is hardest to see before the dawn.”
The human eye uses different photoreceptors to convert light into electrical signals for brain depending on the amount of available light: The more numerous rod photoreceptors are used for dim light. Alternately, the cone photoreceptors are used for brighter light and is what gives us color vision.
During twilight hours, your eyes are shifting from one photoreceptor to the other making it more difficult for your brain to differentiate the conflicting electrical signals in the brain and thus making it harder to see which seems darker.
(this is also the case for when the sun sets; I try not to drive during twilight hours)
Mr Chuck compliments perfectly Dr Neil 😂😂 born to be friends fr
"we call that night time right?" 😂
LORD. Lord Nice😂
Lord Niceamillion the Chuck
You should also mention that the moon does not emanate its own light it reflects the sun light. Because of that vampires would not be able to go out during the moonlight because they would burn since they would be getting sun light
See, and I always thought vampires couldn't go out at night because they don't exist.
TIL
Maybe the Moon absorbs the part of the light harmful to vampires (but useful to make portals :))
@@mcmosfet2856 Are you serious?
By the way, they are as real as any of these so called "gods" humans believe to exist. And the problem with this world is that they "exist". They only exist in the minds of those who believe them to exist but, they are there. So, what is your point? Do you understand the concept of humor? You just assume everyone in the world is as disconnected from reality as trump? Or is that a humorous comment to a humorous comment on a very interesting video?
You know what?
It does not matter.
What it matters is that you made a comment and that is cool.
Cheers.
What about the light from other stars? Would it cause them freckles?
But if it's the UV exposure that's harmful to vampires, a full moon in perfect conditions only reflects about 1/400,000th the light of the sun, so they might just get a slight tan from the UV.
And if they can't withstand any UV exposure at all, they wouldn't survive turning on light bulbs at night, because those emit small amounts of UV too.
Even flames emit small amounts of UV, so it's time for all the vampires to throw away their fancy candelabras.
It's not easy being a vampire...
The version I have always quoted "It's Coldest before the dawn"!
After I saw the thumbnail, I was gonna come in here and make a joke but Chuck beat me to it. 😅
Is Chuck 'Team Edward' or 'Team Jacob' ?
Almost like that's his job!
These segments are formatted so well. The science plus humor help give better understanding while keeping it fresh and entertaining 🙌🏾
This made a lot of sense. When watching the English Premier League football (soccer), you find a game starting at 8:30PM and you still see some reflection of the sun. That has always caught my attention. Very well explained.
THIS two have great chemistry 0:29
You guys rock please don't stop producing these wonderful explaner s they make me want to learn
I love how your wife is from Fairbanks. I try to go there every year from Canada 🇨🇦
The example at the end was amazing
Great info. Being a Polit years amd years ago we had to know when legally a daybreak was if you werent rated to fly at night....it was a lot earlier than you thought. Sake with nighttime. If there's light...you can have a flight.
Does Chuck just know all the Twilight series from memory?
Scary
The Army taught us BMNT and EENT, (Begin Mean Nautical Twilight & End Evening Nautical Twilight) do you just group those times into Twilight?
You guys Rock!
The military even has to define dawn and dusk in terms of referencing BMNT and EENT. Recognized as times when you can more or less operate, and also as times when you're more prone to accidents.
I'm watching the trademark Arizona pastel sunset as we speak!! And today is finally the day that the days and nights are an even 12 houirs each. But there's technically 12 and 2/3 hours of usable light.
Burning question: If Alpha Centauri is around 5 years away and your light sail travels at 1/4 the speed of light, it takes 20 years to get to that star. My question is, how much time does the sail experience getting there? Doesn’t it experience less time due to general relativity?
Before I continue, I must say that I am simply an observer who enjoys this content, not an expert, and I had the assistance of chatgpt with the quick maths!
According to what I found, an observer from Earth would see the 'sail' or 'ship' travel the 5 Light year gap in 20 years when traveling at 25% the speed of light. The sail itself, or observers on the 'sail' or 'ship' would experience time slightly faster, experiencing 19.36 Years during the trip.
So the short answer is yes it will experience less time due to general relativity.
I grew up in Fairbanks Alaska....Evey year we'd go camping in the hills to watch the sun NOT set on the summer solstice. It was pretty amazing to watch. The Goldpanners baseball team would play a game starting at midnight and didn't need the stadium lights.
I was waiting for Chuck to start singing, “ Twilight Time”, by the Platters!!!!!
I knew about the three twilights, but it was never explained so well and funny as you did.
As an artist i have to say that Twillight really is my favorite time of the day!
Sir Chuck, you stand corrected, for there are FIVE twilights: Breaking Dawn Part 1 and Part 2.
Cheers, both!
I was just in Alaska visiting the end of June. Mostly in Anchorage and it never got below nautical twilight when the sun set before the sun rose back only a few hours after. The one day I spent near fairbanks it pretty much stayed at civil twilight when the sun set only for what seemed like an hour or 2.
bite me! "Heavenly shades of night are falling
It's twilight time
Out of the mist, your voice is calling
'Tis twilight time"
I love this classroom !
Let there be light 🤔
In astrophysics, the universe operates on scales and principles that challenge our everyday understanding of reality. Concepts like dark matter, black holes, and the expansion of space itself remind us that we’re only scratching the surface of what lies beyond. When we look at where the sun never sets-such as in the vast, boundless depths of the cosmos-it's a poetic reminder of the constant motion of celestial bodies and the ever-changing nature of the universe. Each discovery pushes the boundaries of our knowledge, but also humbles us, as we realize how much more there is to learn about the cosmos and its secrets.
I love Startalk❤
Love from Salcha Alaska! Though the day light is waning, the days of long twilight are only six months away!
I spent 5 years in the UK working on U-2 aircraft. I was on mid-shift 11pm-730am. In the wintertime I didnt see the sun for a few months. Couple of panic moments when you wake up at 4 and arent sure if its am or pm.
like always. You guys rock!!
I saw the launch this morning in Florida while driving at 7:20am; it was cool seeing the rocket cast a shadow ahead of its self due to the sun being still below the horizon, but illuminating the atmosphere.
Dr. Tyson answers the questions I never even knew to ask.
Two thoughts. For those that sneak, BMNT (beginning of morning nautical twilight) and EENT (end of evening nautical twilight) are important times and I have heard the old saying as "It's always coldest before daybreak." It often is.
Here in Denmark, we may not have hours of twilight, but when we travel south to Spain or Italy, we sure notice the difference. Dark comes really fast in those latitudes.
Thank you for the explainer, and thank you Lord Nice for your crazy funny jokes. It reminded me of the American logistics officer that said about the civil war in ex-Yugoslavia - "They call it a civil war . . I don't see anything civil about it". He was right there.
I experienced this while in Iceland, in the Winter. The dawn and dusk latest hours. Spectacular.
One of these shorter clips discussing the matter of light pollution would be pretty cool. I always love the imagery matching the info being told.
I'm a Jacob person myself Chuck, but I respect your opinion.
He's into babies tho .. ... 😮
Three three type of Twilight, you say?
1- Twilight: New Moon
2- Twilight: Eclipse
3- Twilight: Breaking Dawn
I've played in the midnight softball game in Fairbanks, I was stationed at Eielson AFB. Always a fun time!
Thanks a lot. I have been depressed because we passed the fall equinox and are only getting 12 hour days I live in Ottawa and on June 21st we got 15 hours 40 minutes of daylight. I hate winter. But summer twilight is the best. Especially in a boat on Lake Ontario.
Around here in Northeast TX we get incredible mulberry, indigo and violet twilight skies
1) Professor given the astronomical twilight do you start your observation or do wait for astronomical twilight to pass because I assume the darker the better. 2) What will the best place on earth be to do the observations with no light pollution. 3) Does 6 degrees in each phase account for about an approximation of 15 minutes?
I already understood this, but during a twilight return to Florida from NYC, I could observe that it was dark on the ground/ocean below, yet the clouds surrounding my plane at 35k feet remained illuminated and twilight was very prolonged.
Thank you
best page in youtube love you guys keep the nice work you are doing for all of us. thanks
At 7:02 , that’s the Mole Antonelliana in the city of Torino (Turin) Italy, what an interesting subject which by the way is at 45 deg 04” North latitude.
Thanks for the explainer! I always knew this (a friend who works on a ship told me this some 20 years ago), but today I looked up my location and found that the last day of this year when there was no night at all (ie the sun never dipped below 18 degrees) was 2nd August.
Thumbs up for Chuck today. So punningly (is that even a word?) witty.
I had to check to make sure and yes, Cinema Sins TH-cam channel did a Back to the Future video and they gave a "sin" to the scene where Marty is driving the Delorean in the Peabody's driveway. By the time he gets to the main road it's already sunrise. LOL
it's the coldest before dawn maybe...
love the show
1:45 I don't know what to say but I really discover this by my self.
In the evening about 6.30 the sun was covered with clouds and there were clouds which were orange in colour and it was beautiful and i just thought about this thing that even after sun is Coverd with clouds, the clouds act as a light defuser and those orange clouds acts as a lens which diverges the light ray from sun which is covered by the clouds to ground.
Keep teaching us, Neil and Chuck!
I think the reason for those movie scenes were because they wanted a dramatic effect on film. Because at one time color film would record low level light when digital did not. But also some filmmakers simply start filming at night and finish at dawn. They don't do private screening before finishing production. The don't see the flaws until the public complains. I remember a can of Pepsi in Game of Thrones...nuff..said
I can remember having English watercolour paintings of sunsets & rises from the late 1800's with striking colours, from the volcanic ash, that went round the World, from the 1883 volcanic eruption of the Krakatoa volcano in Indonesia.
aw i like these new episodes, great editing and Chuck and Neil seem to be enjoying themselves much more than the Covid episodes
I absolutely love twilight and now I want to move up further North to experience longer twilight.
One of the best startalk intros 😂 bravo!
dawn dust & dapple....my three favorite lightings....
Up here in Edmonton, Alberta we don’t get astronomical twilight from May 14th July 29th and it’s awesome!
I found out about this in 2021 before going to Iceland in December as I needed to know how much light I was going to have for driving to my next destination.
I always seen these labels in the weather app but never understood their meaning so thanks
There is a saying amongst the Irish peasantry of long ago that 'it is darkest before dawn' is meant to inspire hope under adverse circumstances:- “Remember,” they say, “that the darkest hour of all, is the hour before day.” Darkest before dawn is a metaphor in that it compares 'the problem' to darkness and the eventual solution or ending of the problem to the dawn.
I like these Neil Tyson clips. Keep them coming. It's the only way today's college students can learn anything useful.
OMG i finally know what’s the difference in my Domoticz home automation system for all these twilights :-) Thank you!
I grew up in Kotzebue, Alaska and that sunset and sunrise over the water clip sure looks familiar!
When you think twilight has two parts but then they tell you about trilight
Aah, but the "twi-" in twilight doesn't mean 'two', it means 'between'. Hence, twilight is the light between day & night :)
@startalk I watched the most recent episode of Futurama & loved Neil’s cameo! I died at the end when Neil needed to hide so they put him in the science section of the books. I was thinking to myself, I know Neil died laughing when they read that part of the script to him. 😂
When the news report the sunset and sunrise time is this when the next 6 degrees start? Also can we figure out how long it takes for the 18 degrees to start?
You need a calculator that takes into account your latitude and the time of year, in order to be able to figure out that information. I’m sure they’re out there for astrophotographers, but I’m not personally acquainted with them.
At the equator on either equinox, sun should be moving 15°/hr (360°/24h), but I can't calculate anything else on my own.
And I was just actually wondering about this. Thank you
I like seeing how the light shifts on Svalbard. Civil twilight is picking up momentum now, after the equinox, and nautical twilight just started happening. At some point, civil and nautical twilight will last 24 hours. I don't remember if astronomical twilight hits the 24 hour mark before starting to shift back the other way.
Neil, I have always been curious about the answer to this question. As an astronomical lamen, everything beyond our own planet is fascinating to me, but you as an SME in astrophysics, what is the one thing in the cosmos that still leaves you awestruck? In other words, what's the one thing you would consider the "coolest" object/entity that YOU have ever visibly seen beyond our own planet?
That untucked pink shirt is sooooo funny! 🎉
❤ love you chuck
My favorite astrophysicist!!!
I grew up in a small village 200 kilometers north of the arctic circle, in Sweden. So for me, seeing the sun in the middle of the night, is not very interesting. 🙂
Loved that fast speed video during the three twilights summary was showing Turin, Italy from the Monte dei Cappuccini
You guys are the best. Bravo!
Do the different twilights roughly coincide with light hitting the differing layers of atmosphere- ie civil/troposphere nautical/stratosphere and astronomical/mesosphere?
As someone with a telescope
Civil: Telescope setup
Naughtical: Telescope alignment
Astronomical: Cup of tea and chat with fellow astronomers
Night: Camera time
Incidentally, photographer Nick Carver recently published a fascinating video on how light goes from harsh to soft to harsh again during sunset and dawn. Truly A+ stuff.
🔥🔥🔥🔥🔥💯👌🏾
This is an awesome one because I didn't know any of this. "Darkest before the dawn" is one of my favorite quotes lol
@Star Talk or anyone, please explain why you don't observe the stars at night. For civil and other twilights, the explanation was given
Luv science and technology
We actually went out to the field to locate positions at this second
Where the old surveyors
Did their solar observation and calculated numbers. I was a instrumental aide in civil and surveying technology 1986..
GREAT CONTENT
You two are my favorites ❤
I haven't even seen this video yet but I love you both so much!