Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

While Charon is currently listed as a satellite or moon by the International Astronomical Union (IAU), consideration is being given to it perhaps being classified as a dwarf planet in its own right, ...

The orbits of 96 of 109 distant minor planets ... using the Canada-France-Hawaii Telescope to find the most distant Kuiper Belt objects. This project, called the Outer Solar System Origins Survey ...

Anomalous orbits of Kuiper Belt objects, studied since 2016 by Caltech’s Michael Brown, point to the gravitational pull of an unseen planetary body. Locating Planet X involves monitoring vast ...

Whereas a moon usually orbits a planet, both Pluto and Charon ... Then, a subsequent impact between Charon and a smaller Kuiper Belt object could have produced the debris that formed the system's ...

A close encounter with a mysterious interstellar object could explain the current orbits of several of Earth’s largest ...

Along with the major planets — Earth, Jupiter, and so forth — the Solar System is home to many small bodies including asteroids, comets, Kuiper Belt objects like Pluto, and their satellites. While the ...

An incredibly rare sight can be seen in the Australian skies until Thursday - and won't reappear for another 800,000 years.