NASA's most eye-catching hints of alien life on Mars and a distant exoplanet left headlines breathless in 2025, but a major ...

Only 6.6% of surveyed astrobiologists agreed that scientists had probably found extraterrestrial life on exoplanet K2-18b.

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

For generations, the search for life beyond Earth has focused on avoiding one of science’s biggest mistakes: claiming a ...

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 ...