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Astronomers may have found a signature of life on Venus（图）
Astronomers signature life Venus
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2020/9/18
The astronomers detected a spectral fingerprint, or light-based signature, of the gas phosphine in Venus' atmosphere. Scientists had previously shown that if this poisonous gas were detected on a rock...
Study:Photosynthesis has unique isotopic signature
Photosynthesis isotopic signature
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2015/4/30
Photosynthesis leaves behind a unique calling card, a chemical signature that is spelled out with stable oxygen isotopes, according to a new study in Science. The findings suggest that similar isotopi...
Chemical signature could help locate Earth-like planets（图）
Chemical signature Earth-like planets
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2009/10/21
New insights into the Sun's chemical composition may provide a new way to search for Earth-like planets orbiting distant stars – claims an international team of astrophysicists.Astronomers have alread...