Neil deGrasse Tyson Explains Time Dilation

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StarTalk

StarTalk

Күн бұрын

Is time relative? On this explainer, Neil deGrasse Tyson and comic co-host Chuck Nice explore facts about Einstein’s theory of relativity that keep them up at night. Does time always move at the same rate?
Discover fascinating properties of the fabric of space and time. Is it true that the faster you move, the slower time ticks for you? What other variables affect the passage of time? Find out about the passage of time on objects orbiting Earth and how we compensate for that here on the surface. Does time dilation affect satellites? What is time like for an object traveling at the speed of light?
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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
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0:00 - Introduction
0:27 - Neil deGrasse Tyson explains Relativity
2:16 - GPS satellites run on different time...
4:51 - How time moves at 99% the speed of light
5:55 - How particles decay in an accelerator
7:19 - Time at the perspective of a photon
10:21 - Outro

Пікірлер: 6 400
@MambaBreezy24
@MambaBreezy24 Жыл бұрын
"If you can't explain it simply, you don't understand it well enough." Neil does it effortlessly. Amazing video.
@R3_Live
@R3_Live Жыл бұрын
Well, either that or your language skills aren't very good.
@satisfiedcustomer
@satisfiedcustomer Жыл бұрын
You call that explaining it simply? I mean granted he broke it down pretty good anyone here watching this I think is a niche audience and is probably able understand it a bit better tho. But I'd say even this breakdown is far from simple for everyday folk.
@taviangaudiuso9078
@taviangaudiuso9078 Жыл бұрын
@@satisfiedcustomer yes and no. it is for a specific audience but he broke it down in simple terms RELATIVE to that audience. you could even say to anybody with his particle accelerator example that the faster u go approaching the speed of light the slower your time is relative to others
@edwardlewis1963
@edwardlewis1963 Жыл бұрын
Time is LOCAL.
@whydnot
@whydnot Жыл бұрын
That was explained very poorly.
@Nigelrathbone1
@Nigelrathbone1 Жыл бұрын
No matter how many times I hear this explanation I still can't wrap my brain around it.
@Horny_Fruit_Flies
@Horny_Fruit_Flies Жыл бұрын
The closer to the speed of light an object moves, the slower it appears to be moving through time (aging) to outside observers... and the faster the outside observers seem to be moving through time (aging) to that object. Another way to look at this, if you looked through the window of a spaceship moving near the speed of light, the outside universe would seem to be moving on fast-forward like a VCR. And if outside observers through a telescope peered into the window of that space ship, you would appear to moving in slow motion. Now light (photons) move AT the speed of light, so to outside observers photons are frozen in time. They don't age, they are the same age the moment they were created as when they have traveled 1 billion light years. And from the photons' perspective, the universe moves through time at infinite speed, so in the instant the photon is created and then destroyed, the universe ages instantly. A photon created shortly after the Big Bang and flung into deep space experiences the birth and death of the Universe in the same instant. Basically, photons are outside of time, time doesn't seem to apply to them in any meaningful way.
@sleepwith4098
@sleepwith4098 Жыл бұрын
whats about the heartbeats? Does that remains same?
@Horny_Fruit_Flies
@Horny_Fruit_Flies Жыл бұрын
@@sleepwith4098 From the perspective of outside observers the heart would beat in slow motion, the heart beats of outside observers would seem faster.
@techknowledge3911
@techknowledge3911 Жыл бұрын
Great!!! It's not just me. I start off paying close attention to every word and detail. About 4 minutes in and I'm lost.
@Nigelrathbone1
@Nigelrathbone1 Жыл бұрын
Okay, I've heard that explanation umteen tumes before. Still no aha moment.
@MaartenSFS
@MaartenSFS 9 ай бұрын
I consider myself to be smarter than the average bloke, but I am constantly impressed by Chuck’s lines of questioning AND his snappy comedical quips. His contribution is what makes the format of Star Talk so succesful. Fascinating and entertaining at once!
@semiramisubw4864
@semiramisubw4864 4 ай бұрын
There is no real "dumb" person actually. There is no smart or smarter imo. Personally i think we all live in our own world and we try to express that with own views.
@DancingAlldayLong
@DancingAlldayLong 4 ай бұрын
​@@semiramisubw4864 LMAO
@iownstaticz8687
@iownstaticz8687 2 ай бұрын
@@semiramisubw4864uhhh ok… get em son
@Anonymous-yh4ol
@Anonymous-yh4ol 2 ай бұрын
I think both Neil and Chuck together....
@iownstaticz8687
@iownstaticz8687 2 ай бұрын
Oh and btw its alr been proven that people can be genetically smarter than others and you can also inherit the intelligence from say for example your dad.
@alihadimajeed3372
@alihadimajeed3372 9 ай бұрын
Imagine having a teacher like Neil for all of your school and university stages.
@audilicous
@audilicous 6 ай бұрын
I would’ve probably graduated
@porterwake3898
@porterwake3898 5 ай бұрын
I would then believe there are 500 genders.
@alihadimajeed3372
@alihadimajeed3372 5 ай бұрын
Why is that ? @@porterwake3898
@MikhailFederov
@MikhailFederov Ай бұрын
All the people who made it in life, became their own Neil to teach themselves. All the losers like you blamed not having a good teacher.
@MarkB-vp9ki
@MarkB-vp9ki Жыл бұрын
To me, the craziest thing about this is how Einstein conceptualized these theories in his time. I wonder how much different things would be today if he had never lived and we had to wait 50 years for someone to come up with these in say the 1950's or 1960's. Einstein is the GOAT in science without a doubt.
@callanc3925
@callanc3925 Жыл бұрын
Its really crazy how much stuff he predicted so long before it could be physically proven
@valueofnothing2487
@valueofnothing2487 Жыл бұрын
It's actually easy. If you use the Pythagorean theorem and compare two reference frames, and then allow the speed of light to be constant, you get time dilation. Einstein didn't even invent this, but Fitzgerald and Lorentz did. What Einstein did was to have the courage to see how this could affect everything - nobody wanted to go there or think about the implications. In fact, they used all their energy to come up with some alternative explanation that did not seem so insane.
@jadonplox
@jadonplox Жыл бұрын
cough isaac newton cough
@Draziell
@Draziell Жыл бұрын
Maybe today he would just be playing videogames...
@silencionomus
@silencionomus Жыл бұрын
It helped a lot that he wasn’t scrolling through KZbin comment threads. What? Oh! Oops!
@jimmyispromo
@jimmyispromo Жыл бұрын
Chuck Nice is smarter than all of us think he is. He really understands and questions things we wouldn't. I love it
@visualizecreate2530
@visualizecreate2530 10 ай бұрын
I think he is smart so that must mean I am not part of all of us! 🤔
@DABESTTTTT
@DABESTTTTT 10 ай бұрын
He’s annoying and ruins the videos
@djstackademikz
@djstackademikz 10 ай бұрын
Deadass … he is keeping up with the convo meanwhile idk wtf they even talking about i keep having to rewind it lol
@reasonerenlightened2456
@reasonerenlightened2456 9 ай бұрын
kzbin.info/www/bejne/Z3OmnIaPhpWBiLM
@patakpatakulia7328
@patakpatakulia7328 9 ай бұрын
Chuck's a beast
@IamGroot786
@IamGroot786 9 ай бұрын
Mind blowing stuff. I recently watched "Interstellar" and so many references are made to Einstein's theories such as time dilation and gravitational effects. Great film!
@KatyaLishch
@KatyaLishch 4 ай бұрын
more mind blowing facts: Let's consider the hypothetical journey to the Alpha Centauri star system, which is located 4.3 light-years away from Earth. If time is measured in years and distances in light-years, then the unit acceleration (a) = 1 light-year/year², is close to the acceleration due to gravity and approximately equals to 9.5 m/s². Let's assume that the spacecraft accelerates with unit acceleration for half of the journey and decelerates with the same acceleration for the second half. Then the spacecraft turns around and repeats the acceleration and deceleration stages. In this scenario, the flight time in the Earth's reference frame will be approximately 12 years, while on board the ship, it will be 7.3 years according to the ship's clocks. The maximum velocity of the ship will reach 0.95 of the speed of light. In 40 years of proper time, such a spacecraft will reach the center of the Galaxy, and in 59 years of proper time, a spacecraft with unit acceleration potentially can make a journey (returning to Earth) to the Andromeda galaxy, which is 2.5 million light-years away. On Earth, during the duration of this flight, approximately 5 million years will pass. By developing twice the acceleration (which a trained person can adapt to under certain conditions and with the use of certain adaptations, such as hibernation), one can even consider an expedition to the visible edge of the Universe (approximately 14 billion light-years), which would take astronauts about 50 years. However, upon returning from such an expedition (28 billion years according to Earth's clocks), the participants risk not finding alive not only Earth and the Sun but even our Galaxy. Based on these calculations, in order for astronauts to avoid future shock upon returning to Earth, a reasonable radius of accessibility for interstellar expeditions with a return should not exceed a few tens of light-years unless, of course, fundamentally new physical principles of space-time travel are discovered. However, the discovery of numerous exoplanets gives reason to believe that planetary systems are found around a sufficiently large fraction of stars, so astronauts will have plenty to explore within this radius (for example, the planetary systems of Epsilon Eridani and Gliese 581).
@NamemaNSl
@NamemaNSl 2 ай бұрын
One point in this film interests me. It is known that when approaching a black hole, time slows down (for an external observer), but when crossing the event horizon, time stops altogether (for an external observer). The question is: how was the main character able to cross the horizon of events? After all, for any external observers this moment will happen in the infinitely distant future. That is, when it crosses the event horizon, by this time an infinitely large amount of time will have passed outside the black hole, and the universe surrounding the black hole will have long since perished.
@KatyaLishch
@KatyaLishch 2 ай бұрын
@@NamemaNSl so, you're not bothered by the fact that after crossing the event horizon he sees the freakin bookshelves in his daughter's room, but you're bothered by the lack of sufficient time dilation for an external observer?
@IamGroot786
@IamGroot786 2 ай бұрын
@@NamemaNSl I'd say this is where the "Fiction" part of Science-fiction comes in...
@NamemaNSl
@NamemaNSl 2 ай бұрын
@@IamGroot786 In fact, this question interests me even without reference to the film. How can black holes grow if the lifetime of the universe is not enough for anything to cross the event horizon? It seems that it is believed that the event horizon still intersects in a relatively short period of time from the point of view of an external observer, but I have never seen an explanation for this.
@Focus.D
@Focus.D 6 ай бұрын
I feel so privileged to be able to enjoy the ramblings of our greatest minds at any time. TY Universe, Chuck, and Neil.
@crangel2183
@crangel2183 5 ай бұрын
Agree!
@n-payne7684
@n-payne7684 2 ай бұрын
But thought time slows down the faster you go
@pandaprophetable
@pandaprophetable 2 жыл бұрын
really cool to see chuck’s aha moments, and the depth of his questions. Thanks chuck for translating for us!
@StarTalk
@StarTalk 2 жыл бұрын
Learning is actually really cool.
@rrpov
@rrpov 2 жыл бұрын
@@StarTalk yeah it is, my 6 year old daughter is learning that everyday:)
@donsuede1194
@donsuede1194 2 жыл бұрын
You know Chuck meant business with the fewer than average quips in between.
@peterkirby1753
@peterkirby1753 2 жыл бұрын
Yes. I was thinking the same. Chuck loves the subject as much as us watching and does a brilliant job of translating (as you said) and saying the genuine "wows" as we are. 👍
@mlungisimokhethi6958
@mlungisimokhethi6958 2 жыл бұрын
I really enjoyed this. He's genuinely intrigued, as am I.
@judahdavid8682
@judahdavid8682 Жыл бұрын
Even though science wasn't my thing in college, Neil breaks this down in a way that I can understand. Mind successfully blown.
@rhainegraves7235
@rhainegraves7235 Жыл бұрын
©€€° J™udah D™avid ®€€°
@nicholas50
@nicholas50 Жыл бұрын
On other topics, Neil DeGrass Tyson is a scientific sellout and should not be taken seriously. He has lied on several counts and pushed SCIENTISM (the abuse of science for the sake of pushing a narrative) for his own political gain in certain arenas. Buyer beware.
@batboylives
@batboylives 7 ай бұрын
Thats like not being able to count and hiring someone else to do your books. How would you know if you are not being cheated out of money? You won't because you can't count. Taking something at face value is just the same.
@user-xx6qs1hb5q
@user-xx6qs1hb5q 7 ай бұрын
These two need a show. A REAL show like late night.. Absolutely insane. And this is why I love science..
@Magnaheim
@Magnaheim 6 ай бұрын
I am always obsessed with space and future tech type concepts. Time Dilation has been something I could never really grasp much until this video. Explaining how the photon from 30,000 years ago doesn't experience any time itself made so much sense, it's a good comparison to show why people experience less time when traveling near that speed.
@peggywoods4327
@peggywoods4327 2 жыл бұрын
After seeing how much Chuck figured out and understood on his own, it's starting to look like he should be in line for an honorary degree! He has had the best teacher... it was really fun watching Chuck realize he knew what was going on and paraphrasing/explaining with glee. This was fun to watch.
@AiNEntertainment101
@AiNEntertainment101 2 жыл бұрын
...absolutely - couldn't agree more. He's become such a well educated dude.
@CadillacDriver
@CadillacDriver Жыл бұрын
Calm down. Intelligent people exist, don't be surprised and threatened by them.
@larrybird9425
@larrybird9425 Жыл бұрын
Chuck always impresses me
@TiffanySoulbird
@TiffanySoulbird Жыл бұрын
His "live fast die young" was perfect. 😂
@jgage2344
@jgage2344 Жыл бұрын
If you spend ** hours with Neil you should just get one …
@garbuckle3000
@garbuckle3000 Жыл бұрын
I remember as a teenager learning that time travel is definitely possible, but only going forward in time. It's just a one way trip. Gives new meaning to "I'll hit you into next week". It also boggles the mind that if a photon has no time, then a light-year really is extremely large.
@geog26
@geog26 Жыл бұрын
large ?
@jacobbarjam1873
@jacobbarjam1873 Жыл бұрын
@@geog26 you know what he meant.
@Ban00
@Ban00 Жыл бұрын
Only those that don't hit a telescope are extremely large hence relativity
@factsonly2013
@factsonly2013 Жыл бұрын
Yah well 9.5 trillion kilometers. Extremely large. Wanna know what's even larger? A 105,700 lightyears. That's the diametre of our galaxy, The Milky Way. So theoretically speaking, a photon born at one point on the edge of our galaxy would take 105,700 years to reach the opposite point, while travelling 9.5 trillion kilometres/5.9 trillion miles per year. Gives you a headache just trying to fathom the vast expanse of just our own galaxy doesn't it? We're nothing in front of it. Then there are 200 billion galaxies and that too is limited to the spectrum of what we call the observable universe.
@alanjohn2675
@alanjohn2675 Жыл бұрын
I didn't understand the correlation there between Photon not experiencing time and then light year becoming extremely large. Hypothetically a spaceship is travelling at the speed of light from our perspective we can see its travel albeit very fast but still observable for us.. but from the perspective of traveler in the spaceship he would not experience the travel itself and from Point A to Point B as soon as he starts he would reach his destination and time would not pass from him between the two points so basically for him he teleported there maybe would not have aged in his travel but for us we saw him moving from Point A to Point B that's what I understood here.
@jasonmack760
@jasonmack760 2 ай бұрын
I said this to a friend some years ago. On a hypothetical world moving much faster than we are through the universe, if they were to look at us through a telescope, they would see the whole of human existence has already passed by. On a hypothetical world moving more slowly, it hasn't even begun. If you take that concept and stretch it out, you see that because of the way time works in our universe, it preserves a perfect copy of our lives. In a very real sense, each of us has always existed, and always will exist.
@chunkyboi4526
@chunkyboi4526 9 күн бұрын
so someone x light years away will see us and someone 2x light years away would see our ancestors this is amazing to think about light emitted preserves our image throughout space n time
@chunkyboi4526
@chunkyboi4526 9 күн бұрын
u dont even need a hypothetical world moving faster than us u just need them to be at a greater distance
@julieritchie1651
@julieritchie1651 7 ай бұрын
Nuc med tech here. Love that I knew most of this, but you explain it so well that my mind is reconfiguring how I look at my surroundings!
@furbabydaddy814
@furbabydaddy814 Жыл бұрын
I’ve honestly never wondered if light aged,or not. But finding that out that it does not,is a mindblower.
@mattball420
@mattball420 11 ай бұрын
Apparently it has a pretty short life span once it stops woving fast enough to freeze in time, hence turning out a light in a room and it going dark right away. A photon is literally an instant frozen in time, never succumbing to its extremely short lifespan
@cocolove9916
@cocolove9916 10 ай бұрын
then how come the light from a star goes out or it dies and turns into a super nova?
@aaronmiranda1312
@aaronmiranda1312 10 ай бұрын
@@cocolove9916 that’s because the star runs out of fuel
@cocolove9916
@cocolove9916 10 ай бұрын
@@aaronmiranda1312 is there a reason behind why ?
@reasonerenlightened2456
@reasonerenlightened2456 9 ай бұрын
if the photon does not age then how come it stretches?
@theExperiencedVirgin
@theExperiencedVirgin 2 жыл бұрын
Even though I understand time dilation, it still blows my mind every time.
@ebob4177
@ebob4177 Жыл бұрын
Yeah it's completely counterintuitive.
@jonathoncook8367
@jonathoncook8367 Жыл бұрын
Sounds like something a lot of kooks talk about in a psych ward.
@valueofnothing2487
@valueofnothing2487 Жыл бұрын
It's actually impossible to understand. The faster you try to understand it, the slower your mind travels until it stops completely.
@ebob4177
@ebob4177 Жыл бұрын
@@valueofnothing2487 haha!
@ebob4177
@ebob4177 Жыл бұрын
@JFQ uhmm not really
@MTMaltese
@MTMaltese Жыл бұрын
Chuck Nice. First time hearing him. He’s such an ice breaker for when we lose enthusiasm. A personal setting-flaw, mm, which I cannot change.
@charlesschwab1858
@charlesschwab1858 10 ай бұрын
Love these videos as these extremely complicated topics are made understandable ! Thank You for Posting 🙂
@imperify7671
@imperify7671 7 ай бұрын
@@StellarFacts12 ok buddy
@andreiaperalta6441
@andreiaperalta6441 7 ай бұрын
@@StellarFacts12 ok😭lmaoooo
@bjdela
@bjdela Жыл бұрын
This is the first explanation of this theory that I actually now can comprehend the "relative" part. Thank you Startalk.
@ecadfb
@ecadfb 2 жыл бұрын
"The photon has no knowledge of that trip." I can never un-hear that. Now, I too will lay awake, staring at the ceiling... knowing the light from my neighbors porch light, the light from the moon, the light from Saturn, the light from the center of the Milky Way and the light from the edge of the known universe all reach my eye in exactly the same amount of time (relatively speaking from the photon's perspective)...
@davidmurphy563
@davidmurphy563 2 жыл бұрын
Wait until you hear about Feynman's work. It's perfectly possible for subatomic particles to travel back in time. Happens all the time in fact.
@Y_M1967
@Y_M1967 2 жыл бұрын
Sounds/seems almost spiritual in nature
@skyhawk_4526
@skyhawk_4526 2 жыл бұрын
@@Y_M1967 From a spiritual perspective, it would seem this description of travel from the photon's perspective (timelessness) seems like the closest scientifically observable thing we can compare to the nature of God. I mean if all the photons in the universe collectively travel throughout the universe instantly (at least from their own perspective) then they are basically omnipresent which has always been one of the key attributes of God.
@KhanSphere
@KhanSphere 2 жыл бұрын
@@skyhawk_4526 omnipresence was not always attributed to god(s). Even within christianity: according to the bible, god only knew that Adam and Eve ate the fruit when he saw that they were covered. Also, humans are sentient, and god has always been attributed sentience. This, among other attributes of god shared with humans, means that we're the closest thing to gods (which makes sense, considering we made it up).
@bigtank2185
@bigtank2185 2 жыл бұрын
How did the explanation of the travel of a photon turn into commentary about spirituality and god? That makes no sense to me. People's opinions about spirituality and implying them in science boggles my mind
@impressivenewguinea4016
@impressivenewguinea4016 9 ай бұрын
Thankyou for the explanation. After two years of watching KZbin on time travel, now I understand.
@JoseMTamez
@JoseMTamez 16 күн бұрын
Man, for the longest time, I was asking myself what the gravitational pull of a planet has to do with time dilation and you finally answered it for me. I was watching every video on this search and not one mentioned a planet's gravitational pull. I'm telling myself, there has to be more to this story. Then bam! Out of nowhere, you began to explain that it wasn't until ten years later it was formulated that the stronger the planet's gravitational pull the slower time tics. Thanks for clearing that up for me and now I'm left wondering why this isn't mentioned more in any of the other videos. Go figure!
@snehilraj6436
@snehilraj6436 2 жыл бұрын
The duo of Neil and Chuck is perfectly matched. I love to learn these concepts in such an easy way!
@ericparrish1515
@ericparrish1515 2 жыл бұрын
How long can a can phone reach
@user-wl4qs8xl3r
@user-wl4qs8xl3r Жыл бұрын
@@ericparrish1515 Their maximum range was very limited, but hundreds of technical innovations (resulting in about 300 patents) increased their range to approximately 0.5 miles (800 m), or more under ideal conditions.
@GmodMark
@GmodMark Жыл бұрын
Chuck is kinda annoying tbh
@phthirius
@phthirius Жыл бұрын
Stunning. I had read about this so many times, but I hadn't realized that light is, indeed, eternal. Thanks Neil and Chuck.
@mattball420
@mattball420 11 ай бұрын
Doesnt look too eternal when i hit the light switch and the room goes dark lol
@itachininja75
@itachininja75 11 ай бұрын
"Light is eternal" Blackhole/dark spots on the universe: "Are you sure about that?"
@jofftiquez
@jofftiquez 7 ай бұрын
Same realization lol
@chrisg9615
@chrisg9615 5 ай бұрын
Lets say I have the whole universe in a snowball and I am some giant being observing. One person in the snowball is wizzing around at the speed of light, the other is stood still. Both have watches on, then the one who was wizzing around stops. Why would their watches then be different? Because it moved? Does not make sense to me and I'm trying.
@semiramisubw4864
@semiramisubw4864 4 ай бұрын
@@mattball420 We dont know if light disappears when they get soaked in actually. It could actually live on.
@frankcryptohymer8516
@frankcryptohymer8516 8 ай бұрын
thank you Dr Neil and Mr Chuck, Im a huge fan of science and you by far are my favorite Astro Physicist! I love learning. Thank you for your contributions in science
@kivenhiraramire4255
@kivenhiraramire4255 5 ай бұрын
I have a lot of admiration for Chuck's comprehension and quick articulation of scientific knowledge. I believe if he had the opportunity to pursue physics he could have been very good at it and probably a brilliant educator.
@DanceBeforeTheStorm_
@DanceBeforeTheStorm_ 2 жыл бұрын
OMG! Einstein was right! 😱 . . Love you guys, can't tell you enough how grateful I am for making content like this accessible and comprehensible for all ❤️ I wish I had this in school.
@jettmthebluedragon
@jettmthebluedragon Жыл бұрын
Yea 😐in fact think about it what do you remember before you were born you don’t remember anything 😐you could have had a life before but you were dead for a very very long time in fact when you die you go to the same place as if you were not born 😐and eventually you will loose track of time it’s self 😳in fact we could be somewhat repeating our lives and we don’t even realize it 😳after all how would we know earth would form? How would we know it will happen ?we don’t 😐live is very strange 🤔
@Woburn-RoxburyMedia
@Woburn-RoxburyMedia Жыл бұрын
This is the most fun Science Show out there! It's a wonderful show to have middle-schoolers & perhaps High Schoolers watch as part of their curriculum, to first engage them via the curiosity aspect, but keep them via the entertaining manner it's presented. Wonderful segment, wonderful duo Neil & Chuck !
@lcflngn
@lcflngn 8 ай бұрын
If I’d had this presentation in school, I may have had a clue, and possibly an interest, rather than staying confused entirely in the weeds, and memorizing instantly-forgotten random facts. At 60 now, I’m finally having fun learning some science!
@pk3
@pk3 6 ай бұрын
‘Time Trap’ is an underrated movie with a nice plot based on time dilation.
@chaoticpainting1507
@chaoticpainting1507 26 күн бұрын
Wow, that's just mind boggling.. I just found this channel and it's like I can't get enough.. love the knowledge that you have and thank you for sharing it with us!
@andrewgregory6680
@andrewgregory6680 2 жыл бұрын
This was the best episode I’ve seen from you guys ever in time!
@KsNewSpace
@KsNewSpace 2 жыл бұрын
Chuck tries a bit too hard to unlearn what he learned from Neil over the last couple of years to act surprised. I think it's time for Chuck to graduate from the Tyson Academy and become an equal conversation partner!
@thewaywardwarrior
@thewaywardwarrior Жыл бұрын
I love this man. His Charisma and enthusiasm is just so astoundingly entertaining and hilarious, and at the same time compelling and fascinating.
@bentheuberdestroyer
@bentheuberdestroyer 7 ай бұрын
I am so late to this series but so excited to get started in it
@milky_weh
@milky_weh Жыл бұрын
It's really fascinating, that u decide to share all this with humanity ❤️
@EOE808
@EOE808 Жыл бұрын
Man my brain got a workout following along. Unbelievable the knowledge built over years. Thank you so much for simplifying it for the rest of us to follow along 🙂
@Bquite........................
@Bquite........................ 11 ай бұрын
T=0 for the photon the entire distance travelled towards earth from its frame of reference earth is travelling towards the photon at light speed but hits earth at present time?
@jimmyispromo
@jimmyispromo Жыл бұрын
These two need a show. A REAL show like late night.
@danielj.murray7215
@danielj.murray7215 Жыл бұрын
Brian Green does a great class on Special Relativity. One of the problems was about muons & their decay time as they fall toward the earth. Only the decay time for a muon was something like 2x10 to negative 6 seconds
@GodsMan500
@GodsMan500 11 ай бұрын
I just discovered this channel and I'm a bit surprised. When being interviewed he comes across as so unpleasant, talking over his interviewer to the point of extreme rudeness, but here he comes across as more conversational and respectful of the person he's speaking with. In other words, it's a give-and-take, as it should be. I've seen so many interviews where he's positively insufferable. It's nice to be able to listen to him nowadays without that distraction.
@mohabdul1
@mohabdul1 Жыл бұрын
I had to watch this 3 times to get it. Thanks
@manutd2998
@manutd2998 Жыл бұрын
That was fascinating! Keep up the good work guys❤
@tomcat9112
@tomcat9112 2 ай бұрын
Amazing democratisation or vulgarisation of knowledge. Well done sir 🙂 thanks 1000 times.
@HEMPNHOPPIN
@HEMPNHOPPIN 5 ай бұрын
Just LOVE Neil’s passion!
@unknownspiritx
@unknownspiritx Жыл бұрын
Never had a video where I had to go back 10 seconds every 10 seconds to grasp what he’s saying and enjoyed every bit of it.
@westcoastbred7745
@westcoastbred7745 Жыл бұрын
Same
@colettefackrell7349
@colettefackrell7349 Жыл бұрын
This is really wonderful. Thank you for explaining the concept of time in this way.
@whocares995
@whocares995 6 ай бұрын
So proud of Chuck he learned so much.
@titou1again
@titou1again 11 ай бұрын
Thank you for explaining it so well
@andrewm8429
@andrewm8429 2 жыл бұрын
I look forward to the days when i get to listen to you guys
@rolandorzabal1955
@rolandorzabal1955 2 жыл бұрын
Me too
@WarpedPerception
@WarpedPerception 2 жыл бұрын
So Speed and Gravity have the same effect on us as our cell phones?, the entire world unfolds around us while we are stuck in our phones...hahaha. ... we are freaking dinosaurs in the grand scheme of things tho, we truly don't know how we got here, what we are doing here or how everything actually works TBH, we are extremely primitive... but man it is entertaining and fun discovering how things work, mostly by accident!... love watching you guys!
@misterphmpg8106
@misterphmpg8106 2 жыл бұрын
yes we are but at least we know it (ok some people don't)😃
@WarpedPerception
@WarpedPerception 2 жыл бұрын
@@misterphmpg8106 lol... Great point, I guess that depends which KZbin channels you watch!. Spending your time wisely has a Time dimension of its own!
@ssgssbeet4133
@ssgssbeet4133 2 жыл бұрын
@@WarpedPerception oh stop it, we are literally still guessing things scientifically, for example, gravity, the one thing that keeps us all alive and reason why we even exist, still dont even know how it works lol, lets admit it now, we are bugs in this universe, better than bacteria, but still, bugs :)
@WarpedPerception
@WarpedPerception 2 жыл бұрын
@@ssgssbeet4133 that was exactly my point.
@NachiV
@NachiV 11 ай бұрын
Watching this reminded me of a poem I wrote about art two years ago. How the light would long to die in consciousness.. Art! Yes, it's just seven notes, There's just so many songs! To think that all of it will be sung, Not tomorrow, but one day! Surely, quite a few are sung away by now. Maybe in the cosmos's formative years, As we all crushed, smashed into each other, We sang like the tap of rain drops on a metal roof, aloud, with none listening, For they weren't carried through to infinity. Or in ours, when we gurgled in the fluids, Inside the soft embrace of her tissues, Listening to her heartbeat infused with the sound of her laughter. A song of life, of birth, that was lost right as it was sung, Maybe locked away somewhere in our primitive cerebral corner; a tragedy! There's also a song sung in absolute solitude, Possibly left for dead, tinged in pain and loneliness, Unheard, never to be sung again. And a song that could resuscitate the fallen; forgotten. There's a song that evolved over time, Its artistry distinctly pointed out, Revitalised as it was sung over and over, Mothering other forms of art. And one that devolved, A poem washed into abysmal wails; intense! Maybe some songs are meant to be sung once, Just once! What ecstacy would the universe vibrate in, in that brief moment it plays, Brimmed in the awareness that it would never replay in its long long existence. Imagine how each song would long to fall into a human ear, Just to be remembered and resung, For as much as we deny divine things aren't "human", There's this inherent will in nature to live on, and that's beautiful! Just like the photons cooked in the core of a star would long, To fall into "your" eye. After making it through the quantum tunnel over millions of years, To die in consciousness! Embrace them, embrace them all! For only the likes of you can Poem inspired by music: Max Richter "Written on the sky" Dated: Oct 26 2021
@stephaniemathis6849
@stephaniemathis6849 Ай бұрын
Maybe the best video I have ever exspierenced
@TomasPavlat
@TomasPavlat 2 жыл бұрын
I would like to see a longer explainer on this topic. I'm pretty sure Dr. Neil has even more facts in his mind. I love it!!! And also who doesn't love Chuck reactions?:D You always make me laugh and I'm not even native english speaker.
@ystong6345
@ystong6345 2 жыл бұрын
Excuse me, that's Dr Neil and Lord Nice to you (and all of us).
@TomasPavlat
@TomasPavlat 2 жыл бұрын
Fixed, i'm so sorry. Didn't wanna disrespect doctor Neil deGrasse Tyson and Lord Chuck Nice.
@conm87
@conm87 Жыл бұрын
Love these episodes! I always love to get a different spin on things I know (or learn about things i don’t). Never considered that time means nothing to a photon…
@dube7729
@dube7729 9 ай бұрын
I love watching these because it gives my mind a little twist every now and then.
@sherimann6144
@sherimann6144 9 ай бұрын
Neil? You blow my mind and stir my Soul! Thank you!!!
@Geaxuce
@Geaxuce Жыл бұрын
This is actually an observable phenomenon. It's use case is understood in machining on machines like mills and lathes. The easiest place to observe it is with an analog clock that has a second hand. The outer most tip of the hand moves faster according to its relative position in relation the axle it sits on. The relative notion here is because the whole hand moves at the same time but the outer most tip has to travel a further distance over that one second. The force generated on the tip is also heavier as a result. Essential it can be used to think of gravity in relation to time. It's not that a clock will tick faster for you or slower for you the faster you move. The tip of the clock is not transcending the passage of a second relative to the axle and the gears that push it along. The moment of that second is the same. For everyone. The passage of time relative to 2 people, one driving and one walking. The one driving will get to the end of the block fast than the one walking though the arrival of 2 o clock is the same for both. Just as the direction of that second hand's tip and center pointing to 12's arrival happens in the same moment
@nbrown6648
@nbrown6648 Жыл бұрын
This concept (photons experiencing their life history simultaneously) has fascinated me for 50 years. It makes one view the double slit experiment and in particular the delayed choice variants “in a different light” :-)
@patakpatakulia7328
@patakpatakulia7328 9 ай бұрын
man, this was a trip. Loved every second. Now I am gonna hit the spliff again
@rossnrice
@rossnrice 8 ай бұрын
You guys make me smile. Such passion.
@jhwieder2112
@jhwieder2112 2 жыл бұрын
Every time I watch these episodes, I come out with more questions than answers. I teach science and love to learn what they talk about.
@lanceallen9875
@lanceallen9875 Жыл бұрын
Seems like that's how most things work with science. I hope you're a fun teacher that does experiments and makes learning fun rather then a strict teacher that just hands out home work. Seems most science teachers in my experience are pretty cool.
@larryblack9168
@larryblack9168 2 жыл бұрын
I've been a fan for years and have bought all your books. I don't know if this is the episode where you cover GPS but one of the things I love about what's necessary for accuracy is the combination of general relativity to account for the satellites being farther from earth's gravity and special relativity because they're traveling so fast, so the adjustment has to be both backward and forward.
@connornolen3595
@connornolen3595 Жыл бұрын
Agreed. I am a civil land surveyor and I use a GPS unit almost daily. It's very cool to hear something That corresponds with the work I do and how it interacts
@greyphantome2617
@greyphantome2617 6 ай бұрын
Now this thing is keeping me awake at night
@stevenawa2509
@stevenawa2509 11 ай бұрын
That Was An Amazing Topic
@JA-xo1qg
@JA-xo1qg 2 жыл бұрын
StarTalk keeps me sane in an otherwise crazy world; I appreciate you guys!
@DigDeeper23
@DigDeeper23 Жыл бұрын
I LOVE your videos! I wish I would have started watching them a long time ago. I guess it’s never too late to take a new path.
@zahrahasan3060
@zahrahasan3060 8 ай бұрын
Great talk & subject as always
@ninpipu
@ninpipu 11 ай бұрын
Amazing .. thank you Neil and chuck !!! My mind is officially blown 😀
@artdonovandesign
@artdonovandesign Жыл бұрын
How I love Neil and Chuck describing science!
@onionrovirosa
@onionrovirosa Жыл бұрын
Chuck is amazing. He truly loves learning and I love it when he gets quiz and surprises Tyson with correct answers.
@lukeanfossi907
@lukeanfossi907 Жыл бұрын
no he just says wow to everything
@RyanCarrollVlogs
@RyanCarrollVlogs 9 ай бұрын
Great video, I feel the same about surf and travel.
@aidenlee4469
@aidenlee4469 2 ай бұрын
Entertaining and informative
@charleskern5236
@charleskern5236 Жыл бұрын
Love this man! He has taught me SO much about the universe
@dathyr1
@dathyr1 Жыл бұрын
Whoooshhhh!!!!!! This all went over my head but not sure faster or slower. I am glad you explained all this that I didn't understand. I guess I need to go back in time relative to now and watch this video again while the current time moves on. As we say, it is all relative. Have a great day whatever time you are traveling at.
@jamesbarr5170
@jamesbarr5170 11 ай бұрын
Truly mindboggling.
@sabinrawr
@sabinrawr Жыл бұрын
When I think about the agelessness of light, I wonder about the experience (if any) of becoming redshifted. The idea of birth-death simultaneity makes sense to me. But the evolution of light as it travels and changes characteristics over time is what really blows my mind. Perhaps thinking about this "experience" might one day lead to some insight about "spooky" action at a distance or even FTL travel!
@VoltisArt
@VoltisArt 5 ай бұрын
What this lesson on perspective of spacetime dilation tells us is that the light isn't actually red or blue-shifted. A photon experiences nothing while the entire universe (including the photon's potentially infinite "lifespan") happens. It's our observation of spacetime in the big slow world that's shifted, not the light which never experiences time.
@jonahda0mega
@jonahda0mega 2 жыл бұрын
God bless this man, his last covid video had me on point talking to my kids pediatrician 👍🏾🙌🏿
@ThatArcheryGuy
@ThatArcheryGuy Жыл бұрын
@StarTalk by far my favorite episode, I always knew that photons didn’t experience time but I was awestruck when you put it from the perspective of the photon itself. The underlying beauty of our universe is poetic.
@JoseMTamez
@JoseMTamez 16 күн бұрын
I believe you were referring to the muon in gamma rays that decay in two microseconds. Discovered by your buddy Carl Anderson at Cal Tech, who was measuring cosmic rays and observed the existence of this cosmic particle. These cosmic particles were able to reach us and hit the ground but how, you ask, if they decay in two microseconds??. They're traveling almost the speed of light so that pretty much explains it. I wish you could have explained that in more detail.
@arashaloha6858
@arashaloha6858 2 жыл бұрын
I love watching Neil and Chuck. Such a great duo! Thank you for making these videos!
@elenamrosso8172
@elenamrosso8172 2 жыл бұрын
Omg, I'm binge watching this right now. I always failed and hated science, but no one explained it this way. If they did, I would probably choose the path of science. I can't put it into words how much I love Star Talk!!¡!
@Informative_videos
@Informative_videos 7 ай бұрын
Wow. Mind boggling perspective
@user-go3py9by2c
@user-go3py9by2c 9 ай бұрын
Ol, dude, on the right was playing. Keep up.
@tedmosby5755
@tedmosby5755 Жыл бұрын
Neil blows my fing mind every time I see something by him.
@nicholas50
@nicholas50 Жыл бұрын
On other topics, Neil DeGrass Tyson is a scientific sellout and should not be taken seriously. He has lied on several counts and pushed SCIENTISM (the abuse of science for the sake of pushing a narrative) for his own political gain in certain arenas. Buyer beware.
@scoobydoo3159
@scoobydoo3159 Жыл бұрын
How you met your lover?
@phthirius
@phthirius Жыл бұрын
No kidding. So true.
@burner3596
@burner3596 Жыл бұрын
neil is a big dummy dumb dumb
@joeexclamation5276
@joeexclamation5276 Жыл бұрын
Same.
@toxic_bunny689
@toxic_bunny689 Жыл бұрын
Honestly, having such fascinating concepts and amazing concepts of reality explained to me by great minds such as these give me amazing will to push forward. As ridiculous as it may sound, this video was able to reinforce my personal will to live. Thank you for that, Mister Tyson. I always love to be fascinated by the amazing complexity of our reality.
@CheddaWhizzy
@CheddaWhizzy Жыл бұрын
I'm completely devouring these science talks/videos the way I gulp cheese down.
@nerdative
@nerdative 2 жыл бұрын
I love these short explainers, and Chuck is brilliant
@theboombody
@theboombody Жыл бұрын
I had NO CLUE what time dilation was until I watched Neil deGrasse Tyson discuss this in one of his Great Courses episodes that was available on Netflix at one time. Boggled my mind and kept me busy for years. I'm very grateful for Dr. Tyson's work.
@e7danny7m
@e7danny7m Жыл бұрын
can u explain to me ... i dont get it, for me its jsut something that its faster arives faster , simple as that....
@theboombody
@theboombody Жыл бұрын
@@e7danny7m Well, to you a snail seems to move very slowly, but a horse seems to move very fast. Depending on how fast you can go, everything else either seems fast or slow to you. That's a way of saying speed is relative for most things. But light is different. Even if you move at 99.999% of light speed, light will seem no slower to you than if you are only going 1% or less of light speed. The speed of light is not relative like the speed of everything else is. The speed of light is constant to you, no matter how fast you are moving. The only possible way this can happen is if time actually slows down for anyone traveling quickly. Not just that time seems to slow down but it actually slows down. This is depicted in the 80's movie Flight of the Navigator. A kid travels around the galaxy at near light speeds, and when he meets his brother again his brother has aged about a decade but the kid himself has only aged a few days.
@e7danny7m
@e7danny7m Жыл бұрын
@@theboombody seems to me just a theory if we spek bout light speed. And i cant get this in my head.... For me its just things going faster from a to b point, its normal that everything else is doing it slower
@theboombody
@theboombody Жыл бұрын
@@e7danny7m Extremely difficult, or impossible to experience this theory directly. It has been tested and confirmed by scientists using extremely precise instruments we have no access to. We pretty much have to trust them because we can't test the theory ourselves.
@lockdown19
@lockdown19 Ай бұрын
Watching this at midnight while looking at the stars hits different ❤❤
@dahur
@dahur 7 ай бұрын
Neil is so entertaining to listen to....and Chuck is funny. Good duo.
@dj6961
@dj6961 Жыл бұрын
Crazy cool that you get to talk to this dude directly.. Free education 1st hand...free!
@gagankumark
@gagankumark Жыл бұрын
I always learned something new every time I watch Neil's videos. Thank you, Neil. Love from India, Pune.
@AnglandAlamehnaSwedish
@AnglandAlamehnaSwedish 10 ай бұрын
I love all content with Dr. NDT
@cgsschaefer
@cgsschaefer 11 ай бұрын
perfekt ! thank you
@jmcsquared18
@jmcsquared18 2 жыл бұрын
6:16 The neutron is the one decays when it's freed from an atomic nucleus. Has a half life of about 10 or so minutes before splitting into a proton, electron, and antineutrino (this is called Beta decay).
@catherinedesrochers
@catherinedesrochers 2 жыл бұрын
I was looking for the exact term over the internet and indeed it seemed to be the neutron with a different lifetime than the one indicated in the video. Thanks for confirming it!
@ShittyMcPoopyBalls
@ShittyMcPoopyBalls Жыл бұрын
I love these two so much. Words can’t express how grateful I am for this channel’s existence ❤️
@rehan2118
@rehan2118 Жыл бұрын
I used to learn about these scientific facts as a kid in the 80s but the difference is Neil Degrasse teaches these children facts to his followers whilst preaching that God/Creator doesn't exist. Neil Degrasse is a fraud.
@ShittyMcPoopyBalls
@ShittyMcPoopyBalls Жыл бұрын
@@rehan2118 Neil doesn’t argue against the existence of God. He’s very clear about his agnosticism.
@rehan2118
@rehan2118 Жыл бұрын
@@ShittyMcPoopyBalls Neil Degrasse said "if it wasn't for advancement in quantum physics we wouldn't have computers". Which ia a complete lie yet he's Atheist/Agnostic followers actually believe in this lie and go round parrotting and boast about it to Theists. I 've had many Atheists quote this ignorant statement at me to boast about the achievement of Science.
@rehan2118
@rehan2118 Жыл бұрын
@@ShittyMcPoopyBalls Both of these guys are annoying and have an irritating personality btw. You have to be either a child or an ignorant in Science to love these two guys.
@XCaliKev
@XCaliKev 9 ай бұрын
👍😎 Really enjoy Neil & Chuck, but that one went way over my head.
@dalelerette206
@dalelerette206 7 ай бұрын
Thank you so much, sir. Very informative. There is a ‘Present’ that is everywhere at once. Right now it is the Present. But if I wait a few seconds it is still the Present. And if I wait a Thousand Years, it’s still the Present. What divides the Past & Present yet retains so interconnected? Once upon a time I’ll pass on to the next For as soon as I am here I’ve left. However this is merely how you perceive. For I never really change and yet still continue to weave. I am reminded of that old poem from long ago: “Has it ever struck you that life is all memory, except for the one present moment that goes by you so quick you hardly catch it going?” Tennessee Williams
@thelampposts2972
@thelampposts2972 Жыл бұрын
Love your humor and incredible smarts!
@StaticBlaster
@StaticBlaster 2 жыл бұрын
I can listen to Neil all day talk about everything apropos of astronomy and astrophysics. Time Dilation really fascinates me. It boggles my mind, you could, in principle, travel far into the future from everyone else's perspective on Earth (assuming you could travel a substantial fraction of the speed of light or if you could hover above the event horizon of a black hole).
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