REx sample return capsule contained rock from the asteroid Bennu. NASA/Keegan Barber Mary Magnuson, Collecting asteroid samples China’s Tianwen-2 asteroid sample return mission is set to launch this ...

Data from the James Webb Space Telescope on exoplanet K2-18b has revealed the "strongest hints yet of biological activity ...

Data from the James Webb Space Telescope on exoplanet K2-18b has revealed the "strongest hints yet of biological activity ...

An exoplanet is any planet beyond our solar system. Most of them orbit other stars, but some free-floating exoplanets, called ...

As astronomers study an exoplanet called K2-18b, conflicting research reveals how difficult it is to find evidence of life beyond Earth.

The skepticism continues over recent claims of possible hints of alien life on exoplanet K2-18b.

Hopes for alien life dim as doubts emerge over exoplanet K2-18b chemical signals by Daniel Lawler edited by Andrew Zinin Editors' notes ...

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent analyses discount the evidence.

K2-18b recently made headlines after researchers claimed to observe possible “signs of life” in the planet's atmosphere. So, did we find aliens?

A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But not everyone agrees that it signals life.

A Harvard professor questions whether research conducted at the University of Cambridge about life on K2-18b is accurate.