Interplanetary Hitchikers
“In the event that an asteroid or comet would impact Earth and send rock fragments containing embedded microorganisms into space, at least some of those organisms might survive and reseed on Earth or another planetary surface able to support life, according to a study published in the Spring 2008 (Volume 8, Number 1) issue of Astrobiology, a peer-reviewed journal published by Mary Ann Liebert, Inc. The paper is available free online.”
