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PBS Space Time
Will the Universe Expand Forever?
Season 2
Episode 26
Throughout history, there has been much speculation about what the fate of the universe would be. Many theorized that the universe would eventually succumb to the pull of gravity, and reverse its expansion in what was being called ‘The Big Crunch.’ However, with the help of mathematical equations from Newton, Einstein, and Alexander Friedmann, we now have an answer.
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14:59
Spacetime on its smallest scale is an ocean of black holes and wormholes...or so we think.

11:49
Did JWST just find a new type of star powered by dark matter?

16:21
Did we just uncover new evidence to support Cold Dark Matter?

15:51
The gravitational wave background has probably been detected using a pulsar timing array.

15:05
Let’s explore how constant this speed of light fundamental constant really is.

14:39
Dark matter may be a quantum mechanical wave that literally holds galaxies together.

16:24
Has AI proven that the proton is made of 5 quarks rather than 3 quarks?

15:16
How close is too close for supernova explosions?

12:14
Could we turn our solar system into a spaceship and drive the Sun around the galaxy?

16:00
If we want to see quantum weirdness with our eyes, we’ll need Bose-Einstein Condensates.

16:42
Could LIGO find alien spacecraft accelerating to near light speed?

15:51
How can we tell the difference between fermions & bosons? Statistical Mechanics!