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The researchers argue that the methane must therefore be created by geologic or chemical processes, or it is a by-product of microbial life.
2009-12-09
Mars extraterrestrial life methane meteorite astrobiologyThe first organism able to substitute one of the six chemical elements crucial to life has been found.
2010-12-02
biochemistry arsenic life extraterrestrial life biology DNA bacteria astrobiology microbiology phosphorus carbon hydrogen oxygen nitrogen sulfurA meteorite found in Antarctica could lend weight to the argument that life on Earth might have been kick-started from space, scientists are claiming. Chemical analysis of the meteorite shows it to be rich in the gas ammonia. It contains the element nitrogen, found in the proteins and DNA that form the basis of life as we know it.
2011-03-01
panspermia cosmology philosophy life DNA ammonia evolution meteorite astrobiologyThis would enable plants to absorb more light to photosynthesise, using their star's light to convert carbon dioxide into organic compounds...
2011-05-20
dark light astrobiology plant planet extraterrestrial life