The James Webb Space Telescope's discovery of unusually bright and massive galaxies soon after the Big Bang has cast doubt on ...

Pluto may have been downgraded from full-planet status, but that doesn't mean it doesn't hold a special place in scientist's ...

Primordial black holes may be exploding throughout the universe. If we can catch them in the act, it could pave the way to ...

Pluto's demotion remains controversial for some scientists, though, in part because of the way it was reclassified. Philip ...

A team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids and comets with new solar data sets to develop a revised solar composition that potentially reconciles ...

In the time Pluto was found, classified as a planet and reclassified as a dwarf planet, it has not completed one orbit. One ...

The possibility of life beyond Earth has filled our imaginations and been a driving force behind space exploration for ...

The changing faces of Pluto| The predominant color of Pluto's surface is thought to result from ultraviolet radiation from the distant Sun breaking down methane on the planet's surface, leaving a dark ...

Astronomers are investigating the possibility of a hidden ninth planet beyond Neptune, which could explain unusual orbital patterns in the Kuiper Belt.

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...

In the 1997 movie "Contact," adapted from Carl Sagan's 1985 novel, the lead character scientist Ellie Arroway (played by ...

A 2022 image of our galaxy's central black hole taken with the Event Horizon Telescope could have some important inaccuracies, a new study claims.