Far beyond Neptune, astronomers have finally confirmed a compact clump of icy worlds hiding inside the Kuiper Belt, a feature ...

The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

Two greenish-hued comets are swinging through the inner solar system this fall, offering a rare chance to spot them in the coming weeks. The comets, named C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), are ...

In late April 2026, a long-period comet will swing through the inner solar system. It will likely be visible with binoculars, ...

If you were to perfectly follow the steps in An Idiot's Guide to Making a Solar System, you should eventually find yourself with a star surrounded by a flat disc of planetary material orbiting in ...