Mars Express’s OMEGA uncovers possible sites for life ESA

By mapping minerals on the surface of Mars using the European Space Agency’s Mars Express spacecraft, scientists have discovered the three ages of Martian geological history – as reported in today’s issue of Science – and found valuable clues as to where life might have developed.
The new work shows that large bodies of standing water might only have been present on Mars in the remote past, before four thousand million years ago, if they were present at all. Within half a billion years, these conditions had faded away.