Astronomers have spotted a lonely world roughly the size and mass of Saturn, drifting through the Milky Way without a star to orbit. The discovery turns a once theoretical curiosity into a concrete ...

Astronomers have spotted a Saturn-sized world drifting through a region of space that theory once said should be almost empty, a so‑called Einstein desert where planets are notoriously hard to find.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A rare six-planet parade will stretch across the sky before ...