Beyond the familiar planets lies a fascinating frontier filled with icy worlds, mysterious orbits, and cosmic curiosities.

In Roman mythology, Pluto is the god and ruler of the dead. For a return mission to the dwarf planet, Howett and her ...

A new study suggests that the dwarf planet Ceres once supplied a steady stream of chemical energy and may have been habitable.

NASA’s James Webb Space Telescope finds TRAPPIST-1 d lacks an Earth-like atmosphere, narrowing the search for habitable planets.

A newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be another nail in the coffin for the Planet Nine hypothesis.

A dwarf planet in our own solar system may once have been habitable, new Nasa research has revealed. Ceres, which lies ...

Scientists may have found the first planet ever detected around our closest “solar twin,” a star called Alpha Centauri A, the ...

New near-infrared spectrograph targets red dwarf planets by University of Geneva edited by Gaby Clark, reviewed by Robert Egan Editors' notes ...

New evidence suggests that a dwarf galaxy orbiting the Milky Way called Ursa Major III is actually a star cluster.

The debate about an undiscovered planet X or planet 9 has been going on for more than 100 years.

Ceres, a dwarf planet, may have been more than just a cold, distant world. NASA's findings reveal a past where life-supporting conditions might have existed.

To make matters worse for the Planet Nine theory, this is the fourth sednoid to be discovered. The other three also exhibit stable orbits, similarly suggesting that any Planet Nine would have to be ...