(NEW YORK) — Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick atmosphere, which kept it warm enough to support flowing water on its ...

Planetary scientists are revisiting the long-debated idea of a subglacial lake beneath Mars' south polar ice cap. The hypothesis dates back to 2018 when the European Space Agency's Mars Express ...

The United States is stepping back from the most direct test yet of possible alien biology on Mars just as new telescopes and probes are racing ahead to hunt for life light‑years away. Lawmakers have ...