Her: "He's probably thinking abouth other girls..." Neil DeGrasse Tyson:

That tie is *out of this world.*

I like how when he’s explaining physics he gets excited and starts talking fast and then he has to slow himself down to make it sound more dramatic

“Here we are touching an elephant not knowing the elephant is standing there” Idk if it’s just me but this thought is horrifying 😂

“We don’t know what we don’t know” sums up my math knowledge

I feel smarter after understanding nothing

“The universe is vaster than anything in the universe.” Ah yes, it seems the floor here is made out of floor.

As a physicist (not an astrophysicist tho), that thing keeping Neil awake at night is indeed something that I could see physicists lose sleep over

If all my teachers would have explained the subject material like niel degrasse explains almost everything I wouldve graduated high school in elementary school

I love how tickled Neil gets by the simplest of jokes

I kind of love how when Steven says "we won" Neil continues to say "you won..."

This is a near perfect interview. They have great chemistry

“We don’t know what we don’t know” Seems pretty accurate tbh

I love how his thoughts are almost too fast for his ability to communicate them effectively. So amazing.

I feel like Neil was that nerdy kid that was so smart everyone thought he was cool as shit. Always went to him for answers, he was the one to question the teacher, when you looked at him you just knew he was getting somewhere.

Neil Tyson is fun to watch. He so animated and excited. Always love listening to him.

Albert Einstein once said, "If you can't explain it simply, you don't understand it well enough", which shows that Neil has keen knowledge and understanding - amazing.

Stephen: I'm aware of my religion *2 seconds later* Neil: The Vatican has an observatory Stephen: *leans in, intrigued*

I love the way he explained the vastness of the universe, that we may have lost a big part of the universe we could study and explore cause it's beyond our horizon and that the next generations will have less and less universe the discover. I am amazed really, so scary but amazing. And his excitement explaining it is so awesome.

I could talk to Neil for 10 hours straight and not get bored. How fun that would be to grow up with him.

This astrophysicist just confessed that for all our knowledge of science, we can never keep up with the past nor the future, cause our perception of time is so limited and defined.

That dude at 0:22 on the top left really really really loves Neil.

Neil deGrasse Tyson has got to be one of the best guests to ever invite on a show. He is so affable and intelligent. Love their rapport.

You can literally feel how fast his brain goes

“We don’t know what we don’t know” seems obvious but has a deep and scary context to it.

I literally got up, went outside and looked up and said “holy fawk”

It' crazy how Neil has an answer for everything and the answers are so complete, witty and educational. Man is a GOD.

That's one of the greatest things i've ever heard Neil Degrasse Tyson say. I love thinking about the universe and theories on how it works. I've also thought there are many things we can't see beyond the observable universe, picturing something like Dr. Strange's multiple dimensions as an extreme example. We're so small, it's unlikely that everything we see, i.e galaxies, is all there is in the universe. I pictured it this way, it's very simple: asteroids revolve around planets, planets around stars, stars around black holes that form galaxies, and then what. What comes next... what are galaxies revolving around? There's a good chance every galaxy we see, the observable universe, is all but a small sliver of a bigger galaxy ring that revolves something... many many times more massive than black holes. And whatever that thing is must be what is the providing the majority of force, "gravity", that is missing from the equation of dark matter and energy. And I suspect it keeps going and going, more round things revolving around bigger round things. It might also make sense that we cannot see these massive objects, because they act much like black holes upon light. It's somewhat scary to think about, that everything in our observable universe is only but what our star is to the milk way. But I think it's very likely. When Neil says that astrophysicist don't know the source of gravity, that 80% of it is unaccounted for.. That's interesting to hear, because I was skeptical of celestial body cores being the only source of gravity too. The true universe is an infinite piece puzzle, and we're only 3 pieces in starting somewhere in the middle.

Neil Degrassi Tyson. He is like the Public Relations guy for astrophysicists. He knows how to explain this stuff to the rest of us “simple” folk. Carl Sagan was like that.

Ok nobody is gonna talk about his tie??

The universe is so fucking awesome. We’ll never know everything but that’s what makes it so cool.

It says a lot about a talk show when their most frequent guest is a scientist. Kudos!

*"We don't know what we don't know"* _You did it again Neil, what a Phrase._

If people were at least half as passionate about a cause as Neil deGrasse Tyson is about astrophysics, the world would be a better place

Smart and funny is a combination many people lack. Imagine having a conversation with a group of people like this. Orgasmic

Neil Degrasse is one of the very few ppl in the world i could listen to for hours and not get tired of listening

9 minutes passed and it felt like 2... the power of Neil's storytelling

neil is so passionate in his own work it's not measurable

Stephen: Wow, Neil, you’ve been on my show a lot. Neil: Yes, the universe.

"We don't know what we don't know" Oh we know that we don't know what we don't know that's why we are blessed to have people like you Neil.

"The world is not celebrating the same moment." Yesss interesting...

I just love Neil's passion for this stuff

I could spend years with Neil and I would still be hungry for his knowledge!

The idea that the universe evolved from something that we cannot see beyond our own horizon is awesome. What came before the universe? Was there ever a beginning to anything? How many universes are there? The vastness of the cosmos is terrifying.

“We don’t know what we don’t know”… I think that is now my favourite quote

I haven't slept since watching this video.

“We don’t know, what we don’t know” scary stuff

I honestly spiral over similar thoughts. Lost knowledge, especially about existence in general really gets to me. It's the source of much of my existential dread.

Always a joy listening to Neil.

Neil... such an amazing communicator of science.

I was thinking exactly same what he said, in-fact I can feel and think all his talks I have listened so far(not much) and those talks makes very much sense. And I got so much relived and kind of proud that I can grasp all those ideas and philosophy related to science easily by own. He is one of the few persons who can think all conclusions and possibilities philosophically very accurate(don't getting the word) about science or any other topic also. And almost all ideas and talks of him makes lot of sense and are very right. (Btw this my first comment on any social media platform)

I adore Stephen Colbert when he took his glasses off I cough/snort laughed so loud at work. 😆

This man isn't just a national treasure for you Americans, he's an international, global and universal treasure.

Man, worrying about astronomical bodies becoming so distant they are practically isolated in all of space and here I'm just glad I got the elephant reference.

I come back to this video every so often and every time I'm in just as much awe of NDT as Colbert is.

Love Neil DeGrasse Tyson, this is what a truly intelligent person sounds like. He is able to explain a very complex subject matter at a level that can be understood by the masses. Not once did he say "I'm like a smart person."

Neil can steal away any conversation and not a single person will or can stop him.

Tyson is the perfect ambassador for science and scientists. He has done so much to demystify and destigmatize a subject everyday people once believed belong to “geniuses” only.

"In the end, our descendents won't have stars to look at in the night sky"

That "wut" was the best thing in the video 7:31

4:15 saliva or a piece of foodflew out of Neil's mouth 4:16 Colbert noticed it 4:21 you can spot it on the table 5:26 Colbert discretely wipes it away with the paper

Niel Tyson has a real passion for his chosen field and that excitement and enthusiasm is a light in the world were ignorance is prevalent.i wish I had the answer for you Niel but sometimes not knowing the answer is a greater gift as it keeps us looking and discovering new wonders.love and God bless.

And so today I wonder was there a previous chapter ripped from the universe itself, freaking blew my mind. This man is a legend & must be protected.

I see Neil, I click.

We don't know what we don't know!

This man is an absolute gem!

wow... I knew that the acceleration of the universe would someday render much of what we currently see unviewable, but the thought that something might have been in the past but now gone to us today...

Stephen: "I'm team RC." Tyson: "Team Roman catholic. Yeah, ok. Thanks Neil I was lost for a second lmao.

This beautiful man just completely throws the script out of the window and derives from the norm of these talk shows. It's a delight to watch.

That silence when he was talking about dark matter, we refer to that as intrigue.

He once said. Not knowing the answers to the mysteries of the universe is bad enough. But not knowing what questions to ask is worse. ..thats a very profound thing to say if you think about it A very astute and clever man

where a scientist gets this ovation, is a world where I want to live!

I can listen to this guy talk forever....I couldn't pull away if I tried

I watched this coming down off weed and it’s honestly the best enlightening thing I’ve watched. Absolutely love it ❤️❤️❤️

Just realized he sounds like a smarter Seth Rogan. He’s an inspiration though for sure loved his books.

A nerd and a geek, my two favorite people. An astrophysicist and a comedian, love them both. Never boring and educational. Walking footnote... and they are so silly.

Anyone else catch how NdGT corrected Colbert to instead look for _disconfirming_ evidence to Colbert's hypothesis that the audience got the "Team RC" reference? Science ninja.

they both bond so well together

Neil, that is an interesting thought. Another one is: What happens to the collective of photons that are furthest away in the boundaries in the galaxy? Do they lose energy and eventually cease to exists? Do they just stop?

" We don't know, what we don't know." ~ Neil Degrasse Tyson I have a new phobia now...

Now, that's a stable genius.

why i love so much this man he has what a positive energy

Dear Neil deGrasse Tyson, Thank you for so much for giving me another space related existential crisis. First, it was the future of the universe I was worried about. NOW, I am worried that the answers to our questions have been taken away from us by Dark energy.

7:31 "what"? Absolutely love this.

*Hits blunt* My mind is now ready for this

DUDE I SWEAR I WAS THINKING THE EXACT SAME THING TODAY ABOUT THE NEW YEAR HAPPENING EVERY HOUR! These kind of things always happen to me.

Stephen is such a humble and versatile interviewer he can talk and have fun with anyone

Aliens to Earthlings: "We come to interview Neil."

A society that has no sight of galaxies other than our own, will soon come to believe that those galaxies are only myths from the dark ages of earths history.

@ 8:34 We don't know what we don't know. BRILLIANT DEDUCTION!! Well here is one thing I DO KNOW and that is, the more I learn & come to know, the more I realize I did not know very much, and the mind-boggling thing is, there appears to be no escape from knowing that the more we learn & come to know the more we see that we did not know very much which seems to me means we will soon come to know that we do not know anything about anything.

His passion is contagious

I love how he seems on coke, but really he is just too smart to keep up with the speed of his thoughts using words.

We don't know what we don't know - Neil DeGrasse Tyson, 2018.

@1:55 - It's actually 25 times (at least), Newfoundland has it's own time zone 30 minutes out of sync with the Atlantic Time Zone. There might be others that I'm not aware of, but that one I am certain of.

I like how towards the end Stephen acted like he understood what Neil was saying

Literally HIS BEST GUEST

Here's how you win at charades with his name. Get on your knees, mime the grass growing from the floor, and then bite off someone's ear.

"We dont know what we dont know" Thats so easy and deep at the same time.

I love when Neil is going on and on as usual and then suddenly slows down and puts on his documentary narration voice.

He is, as we say in the UK, a national treasure.