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

NASA's most eye-catching hints of alien life on Mars and a distant exoplanet left headlines breathless in 2025, but a major new survey of hundreds of astrobiologists suggests most experts do not yet ...

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 ...

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 ...

Every few months, someone announces we’re on the verge of finding alien life, and the headlines go predictably insane. What ...