Scientists have used data from a long-retired NASA Dawn spacecraft to solve the mystery surrounding the origins of the ...

Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did ...

The dwarf planet Ceres has a diameter of almost 1,000 kilometers and is located in the asteroid belt. In the television ...

The Vera C. Rubin Observatory could be key to discovering a ninth planet in our Solar System that has so far remained in ...

Brown, who is among the co-discoverers of Sedna, told the publication, “Some of our earlier hypotheses, before we realized ...

Data from NASA's Dawn space probe calls into question assumptions about the origin of Ceres in the outer solar system. The ...

Jupiter" exoplanet called 2M1207b, precisely 20 years ago this week. This was the first direct visual confirmation of a world ...

This has led some scientists to speculate that the 596-mile (960-kilometer) wide dwarf planet may have originated at the outer edge of the solar system and may have migrated inwards to its current ...

Only NASA's New Horizons spacecraft—one of five spacecraft that have reached the outer solar system—has managed to fly ...

Mexico, N.Y. – Malaki Sandejas, 8, loves a dwarf planet. Sitting next to his mom on their couch, he rattles off the five in our solar system. “The dwarf planets are Haumea, Makemake, Eris, Ceres and ...