How were the planets created?

Answer by  JackB (7)

The explosion that created the universe caused large molten rocks to collide with each other multiple times. The pieces that were formed from the collision got caught in orbits around stars, and became round because of the gravitational pull of the planet forms a cylindrical mass.

Answer by  Ktotwf (52)

The planets formed from the leftover gas and debris that existed after the Sun formed at the center of the solar system. The inner planets formed mostly from rocky material, the outer planets from the hydrogen gas.