We know that the moon formed through a collision between earth and possibly another planet. If so,
wouldn’t the shape of the moon be irregular?
Can spacetime bend and smoothen out celestial objects in space when they’re rotating on their axis or revolving around another object?
In: Physics
The moon is currently theorized to have been formed after a Mars sized planet collided with the young Earth.
The moon was mostly liquid when it formed, a result of the hot molten rock floating in orbit around Earth.
This rock started to clump together and its own gravity pulled it into a spherical shape. The Moon then took millions of years (possibly billions) to cool sufficiently for it’s core to become solid.
But even then it’s not perfectly round. Even the Earth isn’t a perfect sphere, it’s an oblate spheroid. The Earth bulges out a bit around the equator because the centrifugal forces of the Earth spinning countered Earth’s gravity a tad and made material collect there.
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