Moon's 'earthshine' may help search for alien life
Astronomers have managed to detect the telltale fingerprints of organic life on Earth using a new technique that examines sunlight reflected onto the moon by our planet.
The so-called "earthshine" observations may pave the way for a similar tool to help spot signs of alien life in the universe, scientists say.
The researchers used this method, known as spectropolarimetry, to examine the earthshine, and found that biosignatures on Earth showed up very strongly in the reflected light.
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