But those claims were quickly met with pushback. Independent analyses of the same JWST data suggested the team's evidence for DMS was weak at best, while other experts cautioned that sub-Neptunes may ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of K2-18b, an exoplanet that's a high-profile "water world" candidate. | Credit: ...

An exoplanet orbiting a dwarf star 124 light-years from Earth made headlines around the world in April 2025. Researchers at the University of Cambridge reported that planet K2-18b could be a marine ...

Scientists are increasingly convinced that so-called water worlds—planets covered in vast oceans—may be the most promising ...

A new study challenges the dream of water-rich “Hycean” planets like K2-18b, suggesting that most sub-Neptunes lose their water deep into their interiors during formation. Instead of vast oceans, ...

Hot, small and old—exoplanet TOI-561 b is just about the worst place to look for alien air. Scientists using JWST found it there anyway ...

Ancient ocean grains show Earth’s carbon levels were far lower than expected during key evolutionary eras. The results challenge old theories of life’s rise and hint at patterns that could shape our ...

More than two billion years ago, Earth experienced one of the most important turning points in its history: the rise of ...

Space News on Major Missions and Probes. This past year has been anything but quiet for major space missions. New technology, ...

A natural satellite is simply a celestial object that orbits a planet or a smaller body. Unlike the ones we build and send up ...

"The detection of heavy water … proves the water's ancient heritage and provides a missing link between clouds, disks, comets ...