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Is the Universe Twice As Old As We Thought?

2023-09-12 Science & Technology
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StarTalk
StarTalk
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Description

Is the universe as old as we think it is? Neil deGrasse Tyson and comedian Chuck Nice explain dark matter, the tired light hypothesis, and fluctuations in the cosmic microwave background with cosmologist, David Spergel. What happens when dark matter falls into a black hole? We explore vacuum energy, dark energy, and Hawking Radiation. Learn about the resurrection of the tired light hypothesis, redshifting, and whether it changes our understanding of the age of the universe. We also break down the shape of the universe and our cosmic microwave background. Get the NEW StarTalk book, 'To Infinity and Beyond: A Journey of Cosmic Discovery' on Amazon: https://amzn.to/3PL0NFn Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalk 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! #StarTalk #neildegrassetyson Timestamps 00:00 - Could Dark Matter Be Released as Hawking Radiation? 3:48 - Is The Universe Older Than We Thought? 10:35 - The Size and Shape of the Universe

Top Comments (10)

@spinninglink 2023-09-16

The "temperature fluctuation of the universe being less than the room you're in" was really eye-opening. Shows you just how uniform it is. I love analogies like that which bring it "down to earth".

31 1 replies
@dianacanales2526 2023-09-13

Thank-You Dr. Tyson & Dr. Spergel for your intriguing answers to today's questions. Special Thank-You to Paul Mercurio for sitting in for Lord Nice! You did a great job, Paul!😊 This episode seemed too short, and they always are to me, because the topics and questions posed are so fascinating! Best show on the internet!! Thanks for all you do!❤🪐✨💫

14
@tdome3000 2023-09-12

Extremely good insights from David Spergel there. Even if all this stuff has already been "discussed" elsewhere, this video was very insightful with more details.

14
@angelicapickles9784 2023-09-16

It's funny having two people, especially NDT who loves making jokes and humor, then the one who keeps trying to give the facts without pausing - a testament to his dedication

9
@joe-dp3ng 2023-09-21

N.D.T. has done so much for astronomy with his great personality and his tireless efforts to keep the public informed. He is what the "average Joe" needs to stay interested in science. Only a few come along in any given generation.

7
@BenjySparky 2023-09-12

Niel, David and Paul y'all rock! Peace

5
@julianthegodmusic 2023-09-13

2 years late but I bought the startalk book! Sitting here with it right now ready to read

5
@stevenkarmazenuk2540 2023-09-12

Bring back Chuck.

2
@Primo-BF 2023-09-13

Tips hat to editors <3 I love the pics while they are talking, thank you!

2
@artwatch-y9j 2023-09-14

Neil, we need to make this program longer

1

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