Researchers expect similar sodium salts to be found on the dwarf planet Ceres, in water plumes from Saturn's Enceladus, and ...

NASA has officially confirmed over 5,000 exoplanets. These worlds include icy, rocky, and gas planets with unique ...

A shell of icy objects at the edge of the solar system known as the Oort cloud has a pair of spiral arms that resemble a miniature galaxy, new research suggests.

NASA's Pioneer 11 spacecraft left the solar system! This was the second spacecraft to travel beyond the planetary part of our ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it ...