Why are all planets round in shape?

Answer 1

Planets are round because they are bond together by gravity. Picture a planet as a bunch of rocks floating in space. Those rocks will be attracted to each other by gravity and in the same way a rock rolls down a hill to the lowest spot, it will for a sphere.

Answer 2

At one time, planets were molten, gaseous, or dust balls. The force of gravity "wants" to reduce the energy to lowest terms and that is a sphere. That is why planets, moons, and stars are spherical (round).

Answer 3

it's the same as saying why is the earth round? well all i can say is that it's the way things are. you don't see square or pentagonal or hexagonal craters do you. if different shapes of craters are found then we would have to review our knowledge of physics.

Although many craters are round, not all are. There are scalloped craters, square ones, oblong ones as well as stretched out looking craters. It's all about the angle of impact. Perpendicular impacts are rare. The average impact angle is approximately 45 degrees. The impact angle is small except when the angle is shallow (less than 20 degrees.) When the impact angle is less that 10 degrees the crater is distorted by a great deal. Some craters are large enough and instead of simply being bowl shaped the interior structure (central peak or peak ring) and outside the crater the debris is thrown out of the impact crater causing different shapes and sizes.

Answer 4

Planets are round because of gravity. Gravity pulls all the mass of a planet towards its center, causing it to form a roughly spherical shape. This is the most efficient shape for gravity to distribute mass evenly around the planet.

Answer 5

Gravity is what keeps the planets revolving around the sun. That circular motion wore away at the planets until they were all round.