It happens on December 21st 2012 at 11am GMT
it will be destroyed, considering Earth is a planet.
Every one will die from asteroids.
Both planets would be destroyed, as the gravitational pull would rip off matter from both planets, and they would be ripped apart.
The earth is a planet, it has no known planets within.
There are no planets orbiting Earth.
It would engulf the sun and most of the planets.
They are famous for happening on Mars but also occur on some planets and moons.
(well in pics) but it really wont happen because earth is like a big magnet but the gravitational pull will not let the other planets collide with the earth or (even the sun) some say !!
All the planets would go out of their orbits and the Sun wouldn't warm the Earth, therefore erasing all life on Earth.
The earth would only rotate the sun because the sun is a star so only stars and meteors would be left.
They may happen to cross Earth's orbit, and just crash into it. The gravity of the planets can also help increase the likelihood of a collision.
Earth has no planets of its own. It is one and has one moon.