Astronomers have finally weighed a wandering “rogue” planet, uncovering a Saturn-mass world flung into the galaxy after a ...

Astronomers have uncovered an extraordinary exoplanet circling a pulsar, a remnant of a exploded massive star. Named PSR ...

For the first time since Pluto was demoted, the idea of a true ninth planet is edging from speculation toward something ...

In doing so, they found this orphan is within the same weight class as Saturn, strengthening the case that the galaxy teems ...

Coming just after Planet Labs' (NYSE: PL) latest satellite launch, December was a good month for the space company's stock.

The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain life, according to multiple space agencies. Astronomers have captured ...

Using the James Webb Space Telescope, UK scientists have found an atmosphere on a red hot planet 280 light years away, in the ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the edge of our solar system, evading all our efforts to spot it. Some astronomers ...

Most planets are part of a star system of their own – but some go their own way, and they have remained largely mysterious ...