A potential biosignature indicating the presence of ancient lifeforms has turned up in a rock on the surface of Mars, in the form of what may be traces of chemical reactions from the life processes of ancient microbes. Although the sample will need to be returned to Earth to confirmread more

There is the possibility that life on Earth may not have originated here, but rather travelled to our planet on meteorites after first coming into being on the surface of Mars, according to a new study of Martian meteorites that suggests that the now-arid surface of the Red Planet wasread more