In what may be the most significant clue to alien planet life yet, scientists studying K2-18b have detected two sulfur-based ...

Picture this: a vast, black expanse speckled with stars, where gentle giants—colossal, elegant space whales—glide gracefully ...

Scientists announce detection of compounds on an extrasolar planet that on Earth only produce living organisms, but other ...

Dune. Star Wars. Alien. Science fiction movies love alien worlds, and so do we. But how do scientists find planets outside ...