The first sign of possible extraterrestrials detected in the cosmos didn't come in the form of little green aliens flying around in saucer-shaped spacecraft. In fact, the life that could be – emphasis ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

An illustration shows what exoplanet K2-18b might look like based on data from NASA's James Webb Space Telescope. K2-18b is 8.6 times as massive as Earth, orbits the cool dwarf star K2-18 in the ...

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...

Astronomers have recently detected potential signs of microbial life on the exoplanet K2-18b, an ocean-covered world located 120 light years from Earth. This discovery suggests that the planet could ...

The first Earth-size planet orbiting a star in the "habitable zone"—the range of distance from a star where liquid water might pool on the surface of an orbiting planet. Credit: NASA Ames/SETI ...

Apparent signs of alien life on the exoplanet K2-18b may just be statistical noise, according to a new analysis of data from the James Webb Space Telescope. On 17 April, Nikku Madhusudhan at the ...

Lawrence Livermore National Laboratory is leading a mission to seek the elements necessary for life on exoplanets in far-away ...

Fresh data from NASA's James Webb Space Telescope (JWST) has provided new clues about the nature of the exoplanet TRAPPIST-1 e, a rocky world located just 40 light-years from Earth. Even if ...

An artist’s rendering of planet K2-18b. Credit: A. Smith, N. Madhusudhan (University of Cambridge) FLORA LICHTMAN: This is Science Friday. I’m Flora Lichtman. Later in the hour, using science to ...