Another killer asteroid is on the way, just in time to take our minds off the stock market and foreign affairs.

All those recent movies about killer asteroids seem to have scared half of them away.

This is directly opposed to the killer asteroid you mentioned.

C1 A U.S. project to monitor possible killer asteroids.

Chinese scientists have also contended that testing could help provide defenses against the threat of killer asteroids.

Asteroids - especially killer asteroids - have no real existence.

The high school earth science curriculum I've taught for many years emphasizes the tiny probability of earth's colliding with a killer asteroid.

There is debate among scientists about how often a killer asteroid might be expected to strike Earth.

Sometimes it's hard to know what to worry about - killer asteroids or giant volcanoes.

Bouncer must use his Breakout skills to deflect killer asteroids.