Magically 2
They have not been named. There have been many of them over the millions of years.
the earth is continually bombarded by asteroid, comets and meteors you do not see them because they burn up in the upper atmosphere on impact ... there is an impact site in Mexico ... where it is believed caused the extinction of dinosaur ...
Yes, Earth has been hit by many asteroids which were sent or pulled out of the various zones they normally exist within.
The earth will keep revolving around the sun until the sun dies out or earth is hit by a really big asteroid and knocks it out if its orbit.
An asteroid to happen? Asteroid cannot 'happen'. It can collide with earth, or any other object with mass, though.
Two many to count, the Earth was born from asteroid impacts. Try and imagine all the fine grains of sand and all the wondrous mountains of the Earth. All the water of the oceans. All of it came from asteroid hits during accretion and afterwords.
Asteroids typically take thousands to millions of years to reach the Earth from the asteroid belt. Once in the Earth's vicinity, an asteroid can crash into the Earth at any time depending on its trajectory and other factors.
What happened when an asteroid hit the Earth is debatable but many scientists believe that this is what may have wiped out the dinosaurs. Some people believe that the asteroid created a dust cloud that covered the planet and caused a winter that froze most life.
Asteroids have hit the Earth that have brought about the extinction of nearly every animal and many of the plants on earth.
yes many times
If you ever been in space, there are many asteriods.
Statistically none - or zero. When an asteroid hits Earth - we know about it - or if it is large enough - we don't. The last asteroid to "hit" Earth was about 3.3 million years ago and precedes numerous extinctions.