Dozens of asteroids orbit throughout the galaxy, but the most famous are those that have impacted the Earth. Asteroids that do are best known by the major craters they leave behind. The Vredefort crater was created by an...
Asteroids have an average speed of 25 kilometers per second or roughly 15.5 miles per second. This measurement comes from scientists who monitor asteroids in earth's vicinity.
The average speed of an asteroid is 25 kilometers per second. Depending upon the size and velocity of an asteroid, a collision with Earth could have catastrophic effects.
Comets and asteroids are similar in that both are the remains of the creation of the universe around 4.5 billion years ago, and both can move toward Earth. That is where their similarities end.
Most meteors that enter the Earth's atmosphere are pieces of asteroids from the asteroid belt. The meteors were formed more than 4 billion years ago during what is thought to be the early stages of the solar system.
The majority of asteroids that scientists have formally identified reside between the orbits of Mars and Jupiter. Scientists call this wide swath of space the asteroid belt, and though it contains millions of objects, th...
Most meteorioids begin as small fragments of asteroids that have either shed material or lost mass due to impacts. Other meteoroids can be shed by comets or ejected from planets and moons that have been hit hard enough t...