The molecules, while not a direct sign of life, still signal the existence of complex chemistry on the Red Planet.

Researchers exposed two lichen species to Mars-like atmospheric conditions for five hours—and one performed impressively.

Saturn is below Venus and very low in the predawn sky. In late April it is five degrees above the horizon. You may need ...

NASA's Perseverance rover has discovered a strange rock studded with hundreds of small dark spheres. This unexpected find ...

An asteroid-chasing spacecraft just swung past Mars on Wednesday. As it zipped by, it took hundreds of shots of the Red Planet, as well as ...