Study supports theory that Earth life came from elsewhere

Scientists say they've found the best evidence yet for panspermia - the theory that life on Earth developed from microorganisms brought here from other planets on asteroids, meteors and the like.

Lichen shown to survive in outer space

An experiment carried out on the Internatonal Space Station has shown that lichen can survive in outer space - lending support to the 'panspermia' theory that life arrived here from elsewhere.