Up Next
Back to Show
PBS Space Time
Why is the Earth Round and the Milky Way Flat?
Season 2
Episode 20
Our universe is not a very diverse place when it comes to shapes. Large celestial bodies become spheres, galaxies become discs, and there is little room for variation. Why is this? Well it turns out physics has some pretty strict rules when it comes to creating new planetary bodies.
Support Provided By
14:28
Nuclei are held together by a quirk of nature, without which there’d be nothing.
16:29
Your motion through the universe is extremely complicated, so let’s figure it out!
17:33
If you believe the Mathematical Universe Hypothesis then yes. And so are you.
15:32
Learn more about the time when the moon didn’t exist, and then hours later suddenly did.
15:19
We explore Supercritical Fluids and how being "in the between" is their superpower.
16:13
We explore if it's really possible that new elements exist beyond the periodic table.
15:30
Let’s see how if alien civilizations will ever reach us.
14:40
Quantum Entanglement reveals that the universe is stranger than we thought.
15:29
We explain how The Standard Model of particle physics works!