Astronomy

Why is the Earth Round and the Milky Way Flat? | Space Time | PBS Digital Studios

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Why does our universe make spheres and disks?

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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. On this week’s Space Time, we explore equillibrium and symmetry, the two defining factors that shape our universe.

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COMMENTS:

Felix Ironfist

Florent POUJOL

Reuben Silva

Dom Vasta

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Written and hosted by Matt O’Dowd
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