About 650 light-years from here, in the constellation Aquarius, lies the planetary nebula Caldwell 63, commonly known as the ...

Learn about the Oort cloud, a vast area beyond the inner solar system that is believed to contain icy objects arranged in a spiral shape.

After tracking a puzzling X-ray signal from a dying star for decades, astronomers may have finally explained its source: The ...

Ceres, the largest object in the asteroid belt, may hold answers to fundamental questions about the Solar System. This dwarf planet, positioned between Mars and Jupiter, is the only inner Solar System ...