Why Does The Universe Exist? Fan Grab Bag With Neil deGrasse Tyson

Why does the universe exist? Neil deGrasse Tyson and comedian Chuck Nice answer fan questions about black holes, wormholes, the expansion of the universe and more! What are our options to solve the crisis in cosmology?

Can we answer the question: why does the universe exist? We discuss the meaning of life and get scientific and philosophical with it. Is it all just physics? What happens to matter when it reaches the singularity and not just the event horizon? Learn about Hawking radiation and spaghettification and the mysteries that still persist.

What’s the deal with the green comet? Find out about Oort cloud comets and where the comet gets its green. How big does an asteroid have to be to blow an atmosphere off a planet? What would happen if you pointed a laser pointer at a black hole? We explore gravitational redshift, time dilation, as well as how artificial intelligence will perceive the universe. Could we establish a wormhole for interstellar travel?

Discover the Big Rip and where the heat energy emitted from stars goes. Is the universe getting colder? We weigh the options for resolving the crisis in cosmology, how the JWST impacts it, and whether we are alone in the universe. Plus, find out time travel theories on how the Titanic really sank.

Thanks to our Patrons Fadi Hayek, Kemlyn Brazda, pascale manales, Jules Martin, and Scott Alderman for supporting us this week.

NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free.

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About StarTalk:
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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00:00 - Intro: Grab Bag
1:22 - Why does the universe exist? What is the meaning of life?
11:13 - When matter is consumed by a black hole does it retain its form?
16:17 - Green Comet
21:17 - Can an asteroid blow off the atmosphere?
23:00 - What is gravity's influence on light and time?
29:10 - How will AI perceive the universe?
34:50 - Wormholes for interstellar travel
39:40 - Will individual galaxies get ripped apart as the universe expands?
42:29 - What happens to heat and energy emitted from stars?
45:45 - If you waved at the night sky, is someone waving back?
49:10 - What options are there to resolve the crisis in cosmology?
54:06 - Black holes at the center of galaxies

[leggy]

You're tagging walls and trains. Neil is tagging the cosmos. Man is on another level.

[gusdenver]

Your laser beam is not on the way to that star. It is on the way to where that star was years, decades or even millennia in the past.

[SkyRunner]

Professor Tyson is one of the best teachers you could ask for... Humble, passionate, creative, full of life and curiosity...

[drk_knight]

They are the epitome of inspiration and curiosity. Just seeing Chuck's eyes and face light up by understanding something Neil just taught is my favorite. You see the light bulb 💡 in real time.

[nixeverything]

I love when the silliness of Chuck makes Neil drop his head to process and gather himself.

[Anthony-mipi]

Every Neil AND Chuck video is a masterpiece!! Best duo anywhere

[mil]

I hope this duo never end. Love the dynamics of them both. Chuck is like the average Joe. The way his mind clicks when Neil explain things is exactly how my mind works. Can't get enough of this channel

[raqueldillett]

I love this show so much! Thank you Dr Tyson and Chuck!

[jfreshh]

I love the cosmic queries of just Neil & Chuck with no guests. Reminds me of old Startalk episodes from 2013 that were audio only

[stephengillenwaters]

Every episode is a learning experience. Great content!!

[MerlinsDrAgon]

I think the last guy’s question was trying to ask about Quasars… I had no idea they were interconnected with supermassive black-holes until a 1AM research-rabbit-hole pulled everything together

[TheDjibounga]

I think the “why” is a more philosophical question than scientific. If Albert Einstein was working on a unifying theory of “everything, ” it means that understanding the “why” sometimes May not be that simple. But I like how Neal expounded on why the question may just be an opening to the rabbit hole. 👍🏿

[robwalker]

I always thought 47 was the answer to the question of what the meaning of life was.

[powerhouse]

That was an EXCELLENT answer to the WHY question. When you put an intent to something that never had an intent, it creates a wild goose chase.

[christhorp]

I actually thought I was the only person who "tagged" space. Thank you for making me feel like I'm not the only one who uses light beams as graffiti for other the inhabitants of other planets to enjoy.

[Ariel_Waters]

0:53 - Chuck's attempt at poetry was a SOLID B+! The imagery of snowfall, including the held belief that no 2 snowflakes are identical, was beautiful. 😉

[sammo]

I actually googled CP time 😂 i should have guessed chuck

[Matt.Thompson.]

Thank you Dr. Tyson and Lord Nice. Love Star Talk, keep up the amazing work.

[saijapz]

hey Neil, Chuck's webcam is 10x better than yours 😆😆😆

[deenulazarus]

I remember your interview with Dr. Hawkins... I saw the most beautiful smile on his face... Thank you for doing Dr. Tyson