That is a good question, that does get some consideration. Organisms inadvertantly sent to the moon on a Surveyor lander were brough back alive by the Apollo twelve crew. Several years of exposure to radiation, extremes of temperature, and hard vacuum did not change live spores into dead spores.
Originally posted by ChromeStar
@Jan 3 2005, 06:09 PM
How will they prevent our microbes from getting a ride to the next planet?
Some forms of life are simply not very fragile, and are perhaps the sort of life that would "thrive" in alien environments like Mars or Io.
Forming opinions as we speak