Tardigrades (aka Water Bears) can survive incredibly harsh conditions, including freezing to near absolute zero, extreme vacuum and radiation. (via Hardy li’l critters will be first tested in open space - Boing Boing)

Tardigrades (aka Water Bears) can survive incredibly harsh conditions, including freezing to near absolute zero, extreme vacuum and radiation. (via Hardy li’l critters will be first tested in open space - Boing Boing)