"The emerging picture is that early Mars and Earth had something in common – both were wet. It is known from analysis of the oldest zircons on Earth that liquid water existed by at least 4.3 billion years ago. We now have evidence for water on Mars that is even older," geologist Aaron Cavosie of Curtin University in Australia told ScienceAlert.

Was alien life in "hot water" on Mars billions of years ago? New evidence from the Martian meteorite "Black Beauty" suggests so.