It must have cleared all other celestial bodies, except its own moons, from its orbit.

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

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

On a small dwarf planet called Makemake, astronomers have seen signs of surprising temperature changes. These could indicate ...

Hubble Space Telescope observations of white dwarf star G238-44 has shown that it is "consuming both rocky-metallic and icy ...

Astronomers have discovered a rocky Earth-like planet around a white dwarf star, hinting at our planet's future about eight billion years from now.

Previous observations suggested that Ceres was less than 30% ice, and its craters were thought to imply that the dwarf planet ...

A team of astronomers has uncovered an Earth-like planet orbiting a star located 4,000 light years away from the solar system ...

Are there hidden planets in our solar system? New technologies, like the powerful Rubin Observatory, brings us closer to ...

Recent data from the James Webb Space Telescope (JWST) suggests that a planet orbiting a small, red star 35 light years away ...

A team of astronomers has identified a rocky planet with a mass similar to Earth’s, orbiting a white dwarf star approximately ...

The solar system has nine planets, but in 2006 the International Astronomical Union declared Pluto a dwarf planet, making the ...