What if they aren't from Earth? Could microbes be hitching rides from space to Earth? NASA has denied evidence of extraterrestrial microbes for almost half a century. Reputable scientists have been systematically descredited for presenting evidence of microbes in meteorites, comets, on the surface of the moon, on Mars, and throughout interstellar space.
For more information read Microbe Sailors of the Starlight in The Anomalist 12:
www.anomalistbooks.com/ta12.html
Also see the an online article about the history of infestations on the Mir station at:
www.anomalist.com/reports/mir.html
Roger Hart