The molecular response of Deinococcus radiodurans to real and simulated outer space environment

Abstract

Up to this date no definitive evidence for extra-terrestrial life has been found. However, the search fascinates mankind and it is very likely that one of the >2300 identified, habitable exoplanets (April 2018) may host a yet unknown kind of. It can be anticipated that our solar system harbours celestial bodies with living organisms apart from Earth and furthermore an interplanetary transfer of life exists. The Tanpopo orbital mission performs a long-term space exposure of microorganisms in order to validate the panspermia theory — the possible transfer of life between Earth and extra-terrestrial bodies. During such an interplanetary journey microorganisms have to survive under the harsh conditions of outer space. To test if microorganisms can withstand outer space environment for a longer period, the international space station (ISS) provides a suitable test facility.