Mars has hosted a surprising number of robotic visitors, yet the question of where humans should touch down remains wide open ...

Mars has long been cast as a world that lost its chance at life early, a frozen relic that dried out billions of years ago. A wave of new research is now challenging that script, arguing that pockets ...

Everybody from NASA to David Bowie has wondered if there’s life on Mars – and now we might have a precise place to look for it. A new Caltech study has shown that photosynthetic microbes could thrive ...