Some astronomers believe that asteroids are the remnants of a planet that came close to Jupiter and was torn by Jovian gravity.
Supporting Facts
Others say that they resulted from a collision between two or small planets.
Still others think the solar system originated from swirling clouds of particles that once surrounded the sun and that the asteroids are rocks that never came together to form a planet.
Answers & Comments
Generalization #1
Supporting Facts
--------------------------------------------------------------
Generalization #2
Supporting Facts