Why is the Earth Round and the Milky Way Flat?

PBS_SpaceTime Published February 21, 2018 9,681 Plays

Rumble 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.

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