From StarTalk.
If you crunched the asteroid belt into one object, would it make a planet? Neil deGrasse Tyson and cohost Chuck Nice answer fan questions about the shape of the universe, the origin of matter, the Casimir Force, pizza toppings, and more!
What are gluons and gravitons made of? Can a carbon atom orbit a human? Why do aliens always use Earth time in movies? We speculate whether aliens should use Earth time and whether cryopods make sense in relativistic travel. Could binary star systems support stable planetary orbits?
We explore binary star systems, pizza topping debates, and the shape of the universe. Does the universe curve so that you would loop back to your origin? Neil breaks down time at the speed of light, the crushing gravity of neutron stars, and whether ships could harvest hydrogen from cavitation. Where does matter come from in the Many-Worlds interpretation? Is the entire universe expanding or just the observable part?
What happens if the Milky Way stops spinning? What is the Casimir Force, and why does empty space press metal plates together? If you crunched the asteroid belt into one object, would it even be a planet? We tackle whether time and space could have existed independently before the Big Bang, and close with advice for physics students navigating uncertain science funding.
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Timestamps:
00:00 – Introduction: Grab Bag
01:26 – Energy in Gluons and Gravitons
04:08 – Can a Carbon Atom Orbit a Human?
06:03 – Alien Time
11:30 – The Likelihood of 2001: A Space Odyssey
13:34 – Pizza Toppings Debate
15:09 – The Shape of the Universe
17:30 – Cryopods & The Speed of Light
20:26 – A Spoonful of Neutron Star
22:09 – Collecting Hydrogen and Oxygen from Cavitation
26:55 – Where Does Matter Come from in Parallel Universes?
28:43 – Whole Universe vs. Observable Universe
30:57 – If the Milky Way Stopped Rotating
34:20 – The Casamir Force
38:42 – The Entire Asteroid Belt Clumped Together
41:13 – Could Space and Time Have Been Separate?
43:59 – The State of Science Funding
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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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