They are from space by definition!
They are simply very large "boulders", and most in the Solar System orbit the Sun in a belt bewteen Mars and Jupiter.
An asteroid
in space
An asteroid
A Martian asteroid is a rock in space that originally came from Mars.
Zero.Zero.Zero.Zero.
go to the middle of the asteroid belt and it's on a asteroid go down to it.
An Asteroid got its color from the dust that was left from collisions with other objects in space.
momentum
A comet or asteroid.
Ceres
anothor asteroid belt
Asteroids travel through space.