Astrophysics

AI

Brian Greene on Quantum Gravity, The Big Bang, Aliens, Death, and Meaning

Brian Greene is a theoretical physicist who also educates the public via his books and documentaries appears on Lex Fridman’s podcast. Time stamps: 0:00 – Introduction 0:27 – Entropy 8:35 – Consciousness 24:54 – Quantum gravity 28:14 – String theory 41:41 – Time 54:13 – Free will 58:36 – Emergence and complexity 1:05:48 – The […]

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Science

Will Constructor Theory Rewrite Physics?

With my interesting in quantum computing, I have spent a lot more time than usual looking at videos like this. The people behind the greatest leaps in physics – Einstein, Newton, Heisenberg, all had the uncanny ability to see the fundamentals – see the deepest, underlying facts about the world, and from simple statements about […]

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Space

How to Nuke a Dangerous Asteroid as a Last Resort

In this video, Anton talks about a new simulation showing that we could use nuclear weapons to protect the planet from certain types of dangerous asteroids Links: https://www.llnl.gov/news/late-time-small-body-disruptions-can-protect-earth https://wci.llnl.gov/simulation/computer-codes/spheral https://www.sciencedirect.com/science/article/abs/pii/S0094576521003921 https://dart.jhuapl.edu/

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Science

New Results in Quantum Tunneling vs. The Speed of Light

In a race, who would win: quantum tunneling or the reigning champ, the speed of light? Paradoxically, the most promising prospects for moving matter around faster than light may be to put a metaphorical brick wall in its way. New efforts in quantum tunneling – both theory and experiment – show that superluminal motion may […]

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