Neil deGrasse Tyson Explains The End Of 'Interstellar' 

I was disappointed to see that Christopher Nolan did not add a disclaimer to the movie warning people not to go into black holes. Now everyone's going to be doing it.

When did I have a girlfriend? Tyson: You're always single

- But Neil you didn’t explain the ending of Interstellar. - I was always never explaining the ending of Interstaller. - Oh okey. Wait what?

Now I need Morgan Freeman to explain what he is trying to say

Now I understand why my college debt seems never ending. Its because I'm always going to college.

First time in my entire life has this guy completely made me understand 3rd and the 4th dimension,

Finally, I understand the actual meaning of "time is the fourth dimension".

Dumbledore: After all this time? Tyson: Always.

Modern video games are a great exemplar of this dimensional shifting. We can manipulate time and visit/revisit the moments of a character's story line via save points, and we can move in a different direction from a save point each time to create a new future. We are removed from the four dimensions of that virtual world, but we can easily see and manipulate it. That character's future would change with each revisit, and they shouldn't be able to remember a future that hasn't occurred from their new return to the past. But what if the coding was recorded somewhere, like dying and returning to a checkpoint to try again but the game penalizes us in some way? Might we find a way to access that data of previous futures? Perhaps this would give credit to those that believe in predestination, premonitions, deja vu, etc. If we can access memories of the future, maybe there was a future we have already experienced?

The man's a genius, I just love how he breaks complex theories and information down for slow people like me

Freaks me out that I'm dead but I haven't experienced it yet. *My most liked comment ever*

One of the most well crafted pieces of cinema I’ve ever seen in my life.

"When did I die, Youre always dying" Yep. Im in a constant state of dying.

Greatest movie that I've ever watched.

"You're always dying." Yeah. On the inside.

He literally didn't spoil a single thing from Interstellar 😂😂😂

My favorite part was when he didn't explain the end of Interstellar.

I like this guy. He explains things very clearly that I've read much about and haven't fully comprehended until he explained it.

Lol Neil knows damn well that only “Love is the one thing that transcends time and space.....”

*That means that somewhere we're constantly spending time with our loved ones that has passed on.*

My mind is absolutely blown away by this guy, just proves that even the world smartest people are not socially awkward people and are actually funny! props this this man!

I love holy black science man

I love how Neil is very humble about how smart he is and explains things in terms everyone can understand. His metaphors are amazing too

Nobody : among us players when a body is reported : 1:04 Edit : AMOGUS

*When the homie hits the blunt

I finally understand the 4 dimensions thing. Thank you science man.

Imagine these laws of physics meant nothing to an advance civilization from another star system.

The thing I love about NDT is that he basically says incredibly simple things (we need a time and place to properly meet), and turns it into an incredible brain exercise that makes us really think much more in depth than what we already knew.

My vid froze at 2:05 as he said: "step out of the time dimension." That was freaky AF. Lol

If he could be my Physics teacher, I would be so happy.

The man who stays 23 years in Endurance, is the king of quarantine. 😂😂

1:01 Actually I say that to my friends all the time in video games 😂😂

It's funny how many people including Neil thought Cooper actually fell 'into' the black hole. Of course he didn't, he would have been ripped to shreds if he got close enough. In the film it specifically said that the 'higher beings' saved Cooper and TARS from falling towards the black hole by transporting them to a space those 'higher beings' created for Cooper from their 5th dimension.

The background music is absolutely atrocious.

Watching this video to understand the ending of Interstellar... Now I need to find a video that explains this video

Amazing movie. How its centered around a setting that is millions of miles away from life and makes you think so much about the people in your life.

So basically, the explanation is: We don't know what's inside a black hole, so just go with it! ._.

He explained this beautifully.

“Alright alright alright” 😎

The soundtrack for interstellar is simply amazing

He did a great job of explaining this

This guy has to be the coolest teacher any one can have!!!

in a nut shell.. i really like the way he explains things... he makes it simple so that he can share his vast knowledge of things..

Why do I know all of this? Neil deGrasse Tyson : because you're always watching this video...

To those people bitching that he didn't explain it: he explained it. He just assumed that you would be able to use your brains to connect together his explanation of the temporal (4th) dimension and what happens at the end of the movie. He apparently assumed wrong, for a few of you. Perhaps he should have drawn a diagram with crayons and used one syllable words?

People forget to notice that the movie is a "science fiction" movie... they take it too damn seriously. Just enjoy the show.

Love that this makes so much sense to me. Even as a kid I can never just accept the very narrow minded answers given to me when I questioned things.

This is so much better than those videos on youtube who vlogs and uploads what they do everyday that nobody cares about.

I just watched interstellar! It was awesome!!

I think I missed the part where he explained the ending...

That's the best explanation about 4 dimensions I have ever seen.. Neil never ceases to amaze

Oh my God ..i am so thankful to this video and ofcourse Sir Tyson. I've been struggling to understand the concept and now i got it very well

So is the fourth dimension time?

"When was I born? You're always born. When did I go to college? You're always going to college. When did I die? You're always dying..." May I propose that time is not a dimension, but an invention? We are prisoners of the present; we exist only in the moment at hand. But our experience may be just one facet of the gem that is all of reality. All of the facets with all of the possible experiences and events exist at once, but we see only the one with which we most closely feel. If we can change what we feel (easier said than done) so that we feel the things that are on a different facet, could we possibly move our consciousness from one facet that has Neil deGrasse Tyson as a scientist to one in which he and, say, Sylvester Stalone are opposite from the initial facet? Therefore linear time as we know it would be an invented system of measure used to try to connect one facet that is a certain sum of experiences and events to a facet that contains all such experiences and events plus one event more. Then the measurement called "future" is an attempt to move into another facet to experience, rather than choosing and selecting the experience we wish to have most. Such as the scene in the movie, the events were as selectable as physical space. He was outside of time, looking in; so was he experiencing time? If time was not being experienced, then he wasn't aging for the experience that he was in the structure. And when the structure folded in, he became trapped in a facet that had the final scene--location: near Saturn; time: that which describes his daughter as being elderly and humans leaving Earth. As Cooper was his daughter's ghost, Cooper existed in a higher dimension, able to look in on himself at a lower dimension. He existed in both places in the same single moment; but the facet that the Earth-based Cooper was experiencing as a different facet than the black hole Cooper was experiencing. Every facet contains a different version of one's self, so when we experience a different one, we are not ceasing to exist in another; we are experiencing a different version of our entire self. Just a thought.

Interesting. I've always thought of time and space being separate. Not in the sense that they don't influence each other and intertwine, but in the sense that time is indeed not the 4th dimension and is rather an entirely different realm. You have your dimensions of space and your dimensions of time. Then again, who am I to argue with Neil DeGrass Tyson of all people

He just made every sense of me feeling like I’ve been in my life before , like I died before I lived before and I repeat the same process. But I’m a prison of being stuck in my own body at this present time with only memories of my past and what and who I’ve encountered. 🤦‍♂️

Spoiler: In the end, you see the "tesseract" deconstructing, so it might be that Gargantua is not a natural black, but a device made by the same folks that put the wormhole next to Saturn.

When did I finally get laid? "You never got laid...I mean you're always never getting laid, always."

He explained it so well. He is the college professor I was missing in my class

I understood everything while watching the movie, I just came here to see him explain it.

The ability to break down complex constructs into simple ideas is the mark of great intelligence, thank you for all that you Dr. Tyson.

But he never actually talked about the _ending_. How Cooper managed to enter the Blackhole without getting disintegrated? :O

The thing is that our reality can have the possibility of time and space being different from what we perceived is amazing. Time points laid out in a graph where you're always doing that thing in that single point of time mind blowing.

When he said "You are always dying" . I felt that

such a wonderfully articulate man.

I just can't 'run' with the notion that 'love' has a faster velocity than light and can therefore enable someone to escape from within a black hole. That was the single most ridiculous idea I have ever seen in a sci-fi movie, and I'm someone who saw 2001 aged 8 and actually understood it. All the sciency stuff that is established in Interstellar is thrown away at the end by claiming that a mere emotion has the ability to literally and practically transcend space and time, which is absurd in the extreme. Even Disney would balk at such a sickly sentimental resolution.

That was an awesome explanation, I truly get it, thank you sir.

I like how they prioritised the fact that he had a podcast over the fact that he is a professional astrophysicist in Haden planetarium

"When was I born?" "Well you were always born." I'm watching Deep Space 9 now, so this reminds me of "You exist here.".

man that was fuckin simple and to the point thanks

When did I like your video? Neil: you're always liking my videos.

Interstellar is one of my all time favorite movies. Amazing work of cinema by one of the greatest auteur directors of our generation. Praise Nolan

This man has a gift of explaining difficult concepts.

Way back during the Back to the Future series, Doc Brown explains to Marty the 4th dimension as being time. He also mentioned the space/time continuum, which we could theoretically destroy, effecting the entire universe...or it could simply be localised to our own galaxy. CERN being one possible tool of that destruction. Scary.

Basically time as a physical dimension

Now we need to explain what he said! Great 👏👏

I'm feeling like my 20 years has just passed A second ago

I need to dislike this video because the title says that Neil deGrasse explained the ending and he didn't. But, again, it's Neil deGrass who is speaking and it is physically impossible to dislike that man. Well done, Business Insider. Well done.

His explanation of the fourth dimension concept about time was fascinating.

Christopher Nolan is some next level director. Too conjure up such mind bending stories. So looking forward to Tenet!

"We don't know what is in a black hole. So take it" best explication ever

I love this guy. Could listen to him all day. Thank you for explaining to my restricted brain.

Being the 13 year old space nerd, my biggest accomplishment of all time is understanding interstellar and all the scientific concepts in it only by watching it once.

Best 4th dimension explanation I've been trying to explain for awhile

The idea of 4 dimensions, as he aptly explained, is rather trivial to grasp; though, the mathematical intricacies of the 4-vector scenarios may not be so easily accessible to the uninitiated. But in order to envision a 5-dimensional reality-where you are no longer bound by an arrow of time (seemingly flowing from the past to the future, but only truly experienced in the ‘present’) and could have access to the entirety of time-you could paint the following picture is your mind’s eye. Imagine that you are standing on the shore of a flowing river. With respect to the water flow, upstream (outside of your field of vision) would be the analogy for the past, the water flowing roughly in front of you (your field of vision) would be the present, and the water flowing downstream (beyond your field of vision) would represent the future flow. Notice by the way, that you have some flexibility in what you choose to be your, albeit limited, present field of vision at any given instant. Now imagine, that you reach the hilltop next to the river and watch the river from up there, where your field of vision has increased considerably and you have present-field-of-vision access to a larger segment of the flow. In analogy, the 5th dimension is like the mother of all hilltops 😀 that offers you a field of vision 👀 to the entire river of time at once.

Ok, look, it's not that people don't understand Interstellar, it's that it relies heavily on a paradox, more specifically the Ontological/Bootstrap paradox. See, Cooper used the black hole, but it HAD to be created by someone in the future for him to use. In order for those people to create it, they had to be saved by Cooper to begin with, so someone else saved them (presumably a future Cooper, etc etc). The loops ties in on itself without a place of origin. People are not stupid, we understand the movie, we just don't buy into the premise, because we've seen it done so many times before!

Wow! What a beautiful way of thinking and explaining!

🙌🏾🙌🏾🙌🏾 Such an intuitive explanation!!!!! Thank you.

I feel like there might be an error with how he explains the 5th dimension. So, obviously, since we don't have access to it, no one knows for sure, but here is my take: He explains how we have access to move around freely (while following the laws of physics) in the first 3 dimensions. Forward, backwards, left, right up and down. Then, we are prisoner to our place in time. All that sound right. But he said if we had access to the 5th dimension, we would be able to "see" or "experience" all times simultaneously. At first it made sense, but then I realized that we don't currently have access to all space, even though we have the ability to move around freely in it. So, if we "transcended," and gained the ability to access the 5th dimension, it may break us out of our jail to time, but what leads him to believe we would be able to access all times all the time. I feel like maybe it would allow us to access time, but we can only experience one time at at any given time. Similar to how we can currently be physically anywhere, but we can only physically be in one place at a time.

I see the multiverse as fireworks. Each explosion is a "big bang", and as one explosion expands into a sphere in the sky (space itself), others explode and dissipate around it continuously. On a humongous scale, I picture that happenening as we speak, with new universes being created over and over.

Brilliant what a way of explaining loved it !

Dr. Manhattan: Hold my timeline...

I can see a tiny part of some universe in his tie. O.O

The best way I've always thought of it is explained in the movie Flatland. Imagine a 2-dimensional world with 2-dimensional beings. They have no comprehension of the Z-axis. Then you pull one of them out and allow them to look down into their 2-dimensional world, from a 3rd dimension. It's easy for us, but would be mind blowing for them. That's how it would be for us to be pulled out of our 3-dimensional space and look down into it from the 4th dimension.

One thing you might be able to see about time is to visualize it this way: If you can visualize the interactions between matter and energy slowing down, then it makes enough sense when someone says that gravity causes time to slow down. For time to go backwards, however, how do you visualize it on an atomic scale? It isn't just matter moving in reverse, but many different (as currently understood) forms of energy exchanging energy in reverse, without a single quark vibrating in the wrong direction. That makes no sense to me. Another way to look at is on a sort of graph. If time is, basically, mathematically equivalent to an exponential curve, then you can slow time down to a near stop, not a complete one, and you can't go backwards.

I loveeee the way that he explains things

does this mean there is a certain dimension where time can be see as a physical dimension , as in i can actualy feel and touch time?

Why is a scientist explaining an ending of a science movie? Did a lot of people didn't get the ending?

Thank you for the video.

Best person who can explain you any topic easily!!!!!!