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Space-Time: The Biggest Problem in Physics
Why Is 1/137 One of the Greatest Unsolved Problems In Physics?
Quantum Gravity and the Hardest Problem in Physics | Space Time
The Simple Math Problem That Revolutionized Physics
What’s Wrong With the Big Bang Theory? | Space Time | PBS Digital Studios
How we know that Einstein's General Relativity can't be quite right
The Biggest Ideas in the Universe | 6. Spacetime
Brian Cox explains quantum mechanics in 60 seconds - BBC News
What Is Really Beyond Edge Of The Universe?
New Idea Solves Three Physics Mysteries at Once: Post Quantum Gravity
The mind-bending physics of time | Sean Carroll
The 4 Greatest Mysteries of Physics