It won't be quite like Bruce Willis in Armageddon, but maybe you'll feel just as much a hero.
The White House and NASA are seeking the public's help in hunting for asteroids that could someday smash into Earth. They're also looking for a perfect space rock to capture so that astronauts could go there and study it.
An asteroid nine times the size of a cruise ship is dropping by Earth on Friday, and it's not coming alone. Asteroid 1998 QE2 will be about 3.6 million miles from our planet at its closest approach. And its proximity has already given scientists a surprise: It has its own moon, measured at about 2,000 feet wide.