Astronomers suspect that a massive metallic cloud swirling in a nearby star system could be hiding a giant planet or dwarf star from view, after it drastically dimmed a sun-like star for around nine ...

A cigar-shaped rock zooming through our Solar System — the first object from a foreign star system ever spotted in our midst — is cloaked in a coat of organic material, astronomers said Monday. Dubbed ...

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...