Astronomers have found that a weird space rock at the edge of the solar system is locked in a rhythmic dance with Neptune. The object, designated 2020 VN40, is part of a family of distant solar system ...

Astronomers using planet-hunting satellites have discovered a rare solar system with six planets moving completely in sync with one another, as if they were untouched by any outside force since being ...

Perhaps you’re familiar with Neptune, the Roman god of the sea. Or maybe you know him by his Greek moniker, Poseidon. Despite the ancient mythos, the planet that bears the name as a result of its ...