Search for Life

A new study suggests that, without plate tectonics and the right balance of carbon dioxide and oxygen, advanced alien civilizations may be exceedingly rare.

Fresh analysis of Perseverance rover data reveals Jezero Crater experienced repeated episodes of water activity, strengthening the case for habitability and raising the stakes for Mars Sample Return.

"Although this doesn't rule out the possibility that Enceladus' ocean may be habitable, it does mean we need to be cautious in making that assumption just because of the composition of the plumes."

A U.S. House of Representatives task force will once again hold a hearing on Sept. 9 to hear from witnesses who claim the U.S. government is hiding evidence of UFOs.

Scientists studying the famous 'Wow! signal' think they've finally pinpointed a possible origin for the baffling radio transmission detected in 1977.

A new study finds that liquids other than water might be able to support life on worlds beyond Earth, potentially expanding the envelope of life throughout the cosmos.

Complex organic molecules that could be the precursors to the building blocks of life as we know it have been discovered in a disk of gas and dust swirling around an infant star.

The search for life beyond the solar system is heating up. Though biosignatures around super-Earth K2-18b remain unconfirmed, the JWST has found the planet could be a water-rich ocean world.

Up to 200 worlds investigated by NASA's exoplanet-hunting TESS satellite could be bigger than predicted, a finding that could impact our search for alien life.

New research indicates that cellular "pockets" that are the first step toward protocells, the precursors of life, could form in the methane seas of Saturn's moon Titan.