Armageddon OUT of here. Armageddon tired of these silly asteroid movies. Seriously, some folks are really worried about the possibility. Still, a killer asteroid will certainly head our way sometime, and there's absolutely no way to tell exactly when it will show up. Let's see why.
Asteroids are large hunks of space debris orbiting the sun.
Most of them are corralled between the orbits of Mars and Jupiter. The largest, called Ceres, is about the size of Texas, like the one in the movie. The rest vary in size, but most are a mile or two wide. They do not constitute an immediate threat to Earth because their orbits don't cross Earth's path around the sun. Perhaps 500 asteroids have long, stretched out orbits that start near the asteroid belt and plunge close to the sun, passing relatively near Earth.