5 ms·
An interesting PBS Space Time episode covering this: https://www.youtube.com/watch?v=Rh898Yr5YZ8 https://www.youtube.com/watch?v=Rh898Yr5YZ8
by squidproquo 5y ago
An interesting PBS Space Time episode covering this: https://www.youtube.com/watch?v=Rh898Yr5YZ8 https://www.youtube.com/watch?v=Rh898Yr5YZ8