Alien microbes will be never be allowed to escape, scientists are told
Rock and ice samples brought back from Mars or Jupiter's moon Europa would be contained for ever if necessary, said Dr John Rummel, senior scientist at the Seti Institute in Mountain View, California.
Many experts are worried about the risk of Earth microbes contaminating other worlds during space exploration.
But there are also concerns about extraterrestrial bacteria or viruses accidentally picked up from the surface of other planets invading the Earth.
Such pathogens are likely to be hardy survivors, and human immune systems may be powerless against them.
Dr Rummel is taking part in a... read more
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