Research on Space Station Shows Lichen Can Survive in Space

Credit: ESA

Theory life came from space gets a boost...

ScienceDaily — You can freeze it, thaw it, vacuum dry it and expose it to radiation, but still life survives. ESA's research on the International Space Station is giving credibility to theories that life came from outer space -- as well as helping to create better sunscreens.

n 2008 scientists sent the suitcase-sized Expose-E experiment package to the Space Station filled with organic compounds and living organisms to test their reaction to outer space.

When astronauts venture on a spacewalk, hours are spent preparing protective suits to survive the hostile conditions. No effort was made to protect the bacteria, seeds, lichen and algae attached to the outside of the Space Station, however.[...]

The samples returned to Earth in 2009 and the results have now been published in a special issue of the journal Astrobiology.

Lichen have proven to be tough cookies -- back on Earth, some species continue to grow normally.

René explains, "These organisms go into a dormant state waiting for better conditions to arrive."