Asteroids (they should really be called "planetoids" since they're sort of failed planets, not failed stars) formed at the same time as the rest of the solar system and are the bits "left over" from the era of planetary accretion. The large number of them in the Asteroid BELT reflects the disruptive influence of Jupiter's gravity. If Jupiter have not been so massive (it's twice as massive as all the other planets combined), a planet would probably have formed there.
Most craters are formed by the impacts of asteroids and comets. Some craters on volcanically active bodies are volcanic in origin.
Some asteroids do have high levels of iridium, but it is not a universal trait. Iridium is found in varying concentrations in different types of asteroids, depending on their composition and origin. The presence of iridium in an asteroid can provide insights into its history and formation.
Comets are Comets and Asteroids are Asteroids
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.
The universe
The most likely came off as debris from colliding planets or other large objects.
A) Some scientists suppose that the asteroids represent pieces of a planet that once existed but was torn apart a long time ago. B) Other scientists believe that the asteroids are material that never came together to form a planet in the first place.
Most craters are formed by the impacts of asteroids and comets. Some craters on volcanically active bodies are volcanic in origin.
Asteroids are thought to have a different origin from comets, having formed inside the orbit of Jupiter rather than in the outer Solar System.
Some asteroids do have high levels of iridium, but it is not a universal trait. Iridium is found in varying concentrations in different types of asteroids, depending on their composition and origin. The presence of iridium in an asteroid can provide insights into its history and formation.
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.
Iron meteorites originate from the cores of differentiated asteroids that experienced high temperatures and pressures. These asteroids were disrupted by collisions, exposing their cores, which then traveled through space before eventually falling to Earth as meteorites.