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PBS Space Time
The Origin of Matter and Time
Season 2
Episode 14
We’ve broken down our preconceived notions about mass and time, now let’s redefine what they really are. Since we know that time is not a universal constant, what is? Matt defines causal order and explains how even though time may look different to multiple observers, it is the one concrete reality that we can all agree on.
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Season
15:14
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16:08
Here’s the story we like to tell about the beginning of the universe.
17:44
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16:51
Let’s talk about quantum gravity experiments that can be done here on Earth!
19:25
What if gravity isn’t weirdly quantum at all, but rather … just a bit messy?
17:02
Have we reached the end of the line of discoverable elements?
15:32
Can we change the color of a black hole?
18:26
Learn about Nobel laureate Roger Penrose's idea of how consciousness is caused by quantum processes.
16:28
Faster than light travel may produce gravitational waves that we could see here on Earth.
20:07
All particles belong to two large groups: fermions and bosons.
16:11
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17:25
So you’ve decided to jump into a black hole...