The skepticism and debate around the question of "are we alone in the universe" makes the field of astrobiology more cautious ...

Jim Green, director of NASA’s Planetary Science Division, says we may be unprepared for the scientific follow-up needed if we discover extraterrestrial life.

Now, consider the age of the universe: 13.8 billion years.Assuming that life has been able, in theory, to develop and evolve for the vast majority of that history, alien species could be billions ...

Astronomer Carl Sagan's work is key to two movies in theaters: Pixar's "Elio" and Mike Flanagan's "The Life of Chuck." ...

This means that the confirmation of alien life in a distant world could be just around the corner, though it depends on what scientists find in Webb’s follow-up observations of K2-18b.

Why a new telescope may help the search for alien life in space : Short Wave Around the turn of the century, 3.8 million people banded together in a real-time search for aliens — with screensavers.

Extraterrestrial Life Aliens: Facts about extraterrestrial life and how scientists are looking for it Exoplanets Scientists reveal 'most promising yet' signs of alien life on planet k2-18b ...

The internet erupted in controversy over Felisa Wolfe-Simon and colleagues’ claim of a microbe thriving on arsenic. Nearly 15 years later, she’s pursuing new research on the boundaries of life.

She emphasizes the need for robust data to support any claims of extraterrestrial life, cautioning against the allure of inconclusive evidence. • Staff can be reached at 202-636-3000.

Sci-fi storytellers love to spin tales about laser-wielding aliens who visit Earth—but in reality, we’re the ones now using sophisticated laser beams to hunt for signs of extraterrestrial life.

Some experimental biologists think the key components that could allow life to survive beyond our planet might be found right here on Earth. Eric Mack has been a CNET contributor since 2011. Eric ...