New photos captured by NASA's Curiosity rover show that Mars' giant, spiderweb-like "boxwork" features are covered in tiny, never-before-seen nodules that bear a striking resemblance to arachnid eggs.

If you think auroras on Earth are a strange and mesmerizing sight, that's nothing like what occurs on the perplexing world of Uranus.

New research using the James Webb Space Telescope offers the most detailed portrait yet of how auroras form on Uranus.

Astrobiologists say we could find evidence of microbial life within the next 10–20 years. What does that mean? Where are we ...