From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and living safely—beyond our planet. “I was like, ‘OK, I'm pretty sure that ...

The planet Mars is the most thoroughly surveyed celestial body aside from Earth itself. Generations of space probes and rovers like Curiosity have collected images and material samples of the red ...

The curious minds at What If imagine finally discovering alien life on Mars, exploring the scientific, cultural, and planetary ramifications. Winter storm strikes as 20 inches of snow becomes ...