A rocky planet twice the size of Earth orbits so close to its host star that its dayside surface has likely melted into a ...

A rocky planet nearly 50 light-years away appears to be airless, dark, and covered in volcanic or weathered rock, according to new observations from the James Webb Space Telescope. This is the first ...

In the search for life elsewhere in the universe, scientists have traditionally looked for planets with liquid water at their surface. But, rather than flowing as oceans and rivers, much of a planet's ...

Add Yahoo as a preferred source to see more of our stories on Google. A photo of Jupiter taken by NASA's Juno spacecraft in September 2023. NASA/JPL-Caltech/SwRI/MSSS ...

(CNN) — Data from a retired NASA mission has revealed evidence of an underground reservoir of water deep beneath the surface of Mars, according to new research. A team of scientists estimates that ...

New research suggests Mars could have enough water under its surface to form a global ocean. On Monday, scientists released their findings, which are based on seismic measurements captured from NASA’s ...

A new study using data from NASA’s Spitzer Space Telescope provides a rare glimpse of conditions on the surface of a rocky planet orbiting a star beyond the Sun. The study, published today in the ...

As astronomers have begun to gather data on the atmospheres of planets, we're learning about their compositions and evolution. Thick atmospheres are the easiest to study, but these same thick ...

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known ...