moon_monkey writes "According to a report lichens - a composite of algae and fungi - can survive in space for up to two weeks. An experiment carried out by the European Space Agency saw two species of lichen carried into orbit and then exposed to the vacuum of space for nearly 15 days. These are the most complex form of life now known to have survived prolonged exposure to space. The experiment adds weight to the theory of panspermia - that life could somehow be transported between planets."
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