Astronomers have revealed new evidence that there are not just one but four tiny planets circling around Barnard's Star, the second-nearest star system to Earth.

Astronomers have uncovered the largest and most distant water reservoir ever detected in the universe. This staggering ...

Astronomers have discovered what they believed to be a rare stable trio of gravitationally bound Kuiper Belt objects, ...

A new study presents a compelling new model for the formation of super-Earths and mini-Neptunes -- planets that are 1 to 4 times the size of Earth and among the most common in our galaxy. Using ...

Ceres is a dwarf planet in the asteroid belt between Mars and Jupiter. It's the largest object in the asteroid belt and the closest dwarf planet to Earth.

Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in ...

New research suggests that a binary pair of Kuiper Belt objects, known as the Altjira system, is actually made up of three ...

A newly identified Kuiper Belt trio, possibly only the second of its kind, could provide strong evidence that these distant ...

Could a giant planet between Mars and Jupiter have doomed Earth? A new study suggests that small changes would have been ...

Scientists have discovered a potential three-body system in the Kuiper Belt, the Altjira system, challenging planet-formation theories.

The challenge of getting such an ambitious project off the ground requires endless approvals and expert teams working ...