Panspermia

Abiogenesis | Bombardment | Mars | Meteorites | RNA Molecules

This is the idea that Earth's biosphere could have arisen from an extraterrestrial seed. The hypothesis called "Panspermia" (Greek for “all seeds”), suggests that life on Earth originated from micro-organisms from space.

Condensed notes produced with reference to “Did Life Come from Another World?” by David Warmflash and Benjamin Weiss, Scientific American magazine, November 2005.