[_ Old Earth _] The earth

[Corn Pop]

Before the earth had any water I guess it was just a void jagged rock without form, I mean, if you took all the water away its not round but a jagged rock. Once the Most High gave water, it had form, but the moon is round with no water and it always had form.

 

[Barbarian]

Gravity pulls large objects into round ones, if they are large enough. The Earth was always round, after it formed.

 

[Corn Pop]

Gravity pulls large objects into round ones, if they are large enough. The Earth was always round, after it formed.

So if there was no water on earth at all, even all sea water, gravity would form the matter into a ball?. This is interesting, I might do some science study on gravity. So the mass of sea water is more powerful than gravity so it cant squeeze it all out and form the earth in a ball, because the earth itself has no shape if you seperate the water and land.

 

[Barbarian]

So if there was no water on earth at all, even all sea water, gravity would form the matter into a ball?.

Yep. Bodies in the solar system that are too small to hold gases or water, still form into a ball if they are massive enough.

The reason planets appear spherical is because gravity compresses the planet into a shape that most evenly distributes the gravitational force among the planet’s mass.


Whether it is shaping water droplets, stars, soap bubbles or planets, nature seeks to minimize the surface area needed to contain a given volume, and the shape that keeps volume at the absolute minimum a sphere.


Any object in weightless space larger than a couple of hundred miles in diameter has enough mass for its gravity to overcome large-scale irregularities and force it into a spherical shape. This gravitational compression also generates significant amounts of heat at the center of the planet. This heat melts, or at least softens, any solid materials within the planet, facilitating the planet’s collapse into a spherical shape.


Objects in space smaller than about 100 miles in diameter, such as most asteroids, comet nuclei and small moons, lack the mass to create a gravitational field strong enough to compress themselves into spheres. These little worlds often take on what I call the “sick potato” look.
http://clarkplanetarium.org/why-are-planets-spherical/

Demos, one of the two moons of Mars, about 6.2 km across the longest axis:

The Asteroid Ceres, about 945 km across:

Someone once figured that a body should be at least 100 miles across to undergo rounding, but I'm pretty sure it depends a lot on the composition of the body.