Astronomers used the James Webb Space Telescope to probe the object, gathering clues on whether it grew larger over time like a planet or fragmented into smaller bits like a star. Stars are born from ...

Planets, like those in our solar system, form in a bottom-up process where small bits of rock and ice clump together and grow ...

A 15-Jupiter-mass object circling a star about 133 light-years away has given astronomers their clearest chemical evidence ...

Far beyond the reach of any spacecraft, a distant world glows with heat so intense that rock itself turns to vapor. In that ...

Two Earth-sized planets orbiting TRAPPIST-1 are locked in permanent day and night, with heat differences suggesting they are ...

Dying stars may be wiping out nearby giant planets as they expand into red giants. Astronomers found that these close-in planets become increasingly rare around more evolved stars, suggesting many ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. A red giant star will ...

Scientists have found that young stellar cousins of our sun are calming down and dimming more quickly in their X-ray output ...

Many of the stars in the Milky Way galaxy are small, dim red dwarfs—stars much smaller than the sun in both size and mass. TOI-6894, located far away from Earth, is one of them. Astronomers previously ...

A giant planet in the HR 8799 system orbits six times faster than its neighbor, reigniting the mystery surrounding its origin ...

This image from a simulation of atmospheric flow shows temperature patterns on one of the newly discovered planets (61Virb), which is hot enough that it glows with its own thermal emission. A movie of ...

Young stars much less massive than the sun can unleash a torrent of X-ray radiation that can significantly shorten the lifetime of planet-forming disks surrounding these stars. This result comes from ...