Many asteroids are the remnants of planets which never got to the size of a full planet. Others are chunks of rock from a celestial object's surface, torn apart by collisions.
Comets are Comets and Asteroids are Asteroids
the asteroids crashed in Asia have 1000 asteroids
No asteroids have atmospheres.
meteoroids
Stars are tremendously larger than asteroids and do not become asteroids.
asteroids belt
You can see asteroids in the sky.
asteroids are a threat to us
it is how circular and asteroids orbit path is.
Asteroids are not luminous like stars. They do not produce their own light but instead reflect light from the Sun. When they are illuminated by sunlight, asteroids can sometimes appear bright in the night sky.
Asteroids
Yes. Asteroids can hit anywhere.