Where do asteroids and comets come from?

Answer 1

Asteroids are minor planets, especially those of the Inner Solar System. However, between the orbital paths of Mars and Jupiter lie a region known as the asteroid belt. Many asteroids come from there, but most of them stay there.

Short-period comets originate from the Kuiper Belt, just outside the orbit of Neptune, while long-period comets are thought to originate in the Oort cloud.

Answer 2

Comets and asteroids are objects in orbit around the sun leftover from the formation of the solar system.