Astronomers may finally understand why planets orbiting two suns, the real-world equivalents of the "Star Wars" planet Tatooine, are so scarce in our galaxy — and it has to do with general relativity.

The fourth planet in the system is a rocky world, while the second and third ones are gas planets.

A small red dwarf star in the Milky Way has drawn attention after astronomers mapped four closely orbiting planets around it.

WASHINGTON: One out of four Sun-like stars in our Milky Way galaxy could host Earth-size planets, making life-bearing systems like ours possibly more common than previously thought, an astronomical ...

Astronomers have signalled the discovery of a planetary body roaming the Milky Way that is not gravitationally bound to the Sun or any other star. The entity is termed a free-floating planet, a class ...