When astronomers search for planets that could host liquid water on their surface, they start by looking at a star's habitable zone. Water is a key ingredient for life, and on a planet too close to ...

Since then, over 6,000 confirmed exoplanets —or planets orbiting other stars—have been found, leading astronomers to conclude ...

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 ...

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 ...

Want to be a top notch candidate for hosting alien life? Then there's a few key requirements you should be aware of: Ideally, ...

Regina Barber and Emily Kwong of NPR's Short Wave discuss an Earth-sized exoplanet, how ant colonies deal with disease and a possible link between volcanoes and the Black Death.

More studies are needed to determine whether TRAPPIST-1e has an atmosphere at all, or the hints of methane are linked to the ...

More research is needed before scientists can determine whether the recently observed methane signatures point to the presence of an atmosphere or are simply the result of contamination from the host ...

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 ...

A first ever detection of a coronal mass ejection from a small red dwarf could have big consequences for life on any nearby planets.

The unexpected galaxy -- Opportunities and constraints: a universe of laws -- Life: what is it? -- The rules of the game: how every living system has to work -- Looking for life: is it really out ...