The alien vessels keep coming in large numbers. How does the astronaut stay ahead of the armada to avoid as much danger as possible?

Alien vs Astronaut is a game that let's you use strategy to your advantage. If the astronaut gets hit by a meteorite, he'll lose a life. When he aims his magnifier at meteorites and pulverizes them into stardust, you score. Touch the right side of the screen to activate either of the two magnifiers.

Comets are streaking by through the universe. Capture a comet and you add a life to the astronaut. You'll want to stockpile lives if you can as the levels get more difficult. Stockpiling lives is not easy, because...

The aliens automatically pursue the astronaut, so use your smarts to avoid attack!