No. Most asteroids in the solar system are in the asteroid belt, but not all. The ones that may threaten to strike earth, for example, are outside the asteroid belt.
No. Asteroids are scattered throughout the solar system in various orbits, some of which are relatively stable. Some have orbits that pass near Earth. But the vast preponderance of large asteroids...
it is unknown for now, but scientists do know that there are hundreds, or possibly thousands.., or even millions! they come in so many sizes, and it is difficult to count them and it is nearly...