Space: Is the Earth Safe From Lunar Contamination?

Fortunately, the possibility that living organisms exist on the moon is remote. But if they do exist, and in turn infect the astronauts, the Apollo 11 flight may indeed be an historic event.

With that ironic understatement, a doctor at the Manned Spacecraft Center in Houston last week summarized an increasing concern among some scientists that returning astronauts may contaminate the earth with strange and perhaps dangerous bugs. His statement added fuel to a controversy that broke into the open last month when it was revealed that NASA had relaxed its elaborate quarantine plans for the Apollo 11 crew...

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