re: Meteroites
Plus we have Earth creatures thriving under two miles of ocean next to
boiling hot hydrothermal vents, microbes that swim in boiling sulfuric acid
pools, that bacteria that can handle 3,000 times the amount of radiation
that would fry us instantly (by repairing its DNA!), and microbes that can
survive being under miles of solid rock.
And here is an article from Scientific American from last November on
panspermia:
http://www.sciam.com/article.cfm?articleID=00073A97-5745-1359-94FF83414B7F0000&pageNumber=1&catID=2
