Astronomers think that a dwarf planet hiding in the middle of our solar system could be a source of frozen water. The dwarf ...

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

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 ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

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

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

Astronomers have discovered an Earth-like planet orbiting a white dwarf 4,000 light years away, raising questions about Earth ...

The celestial object is now redefined as a "dwarf planet," leaving just eight major planets in the solar system. After years of debate over Pluto's planetary status, the International Astronomical ...

If a liquid water ocean is truly present inside Pluto, this puts the dwarf planet among the ranks of other ocean worlds in the solar system, including Jupiter’s Europa and Saturn’s Enceladus.