A star racing through the Milky Way may have a planet in tow, setting a new speed record for exoplanet systems. Using microlensing, astronomers spotted the pair moving at over 1.2 million mph.

In February 2025, all seven of our planetary neighbors will be visible from Earth. So what does such a planetary alignment ...

Star Wars features diverse and massive starships, including those used by egotistical villains and ancient mysterious ...

A massive American web of orbiting missile interceptors could in theory protect the U.S. from an all-out Russian nuclear ...

While finding massive metallic rocks in space is relatively easy, asteroids that are just ten metres in size are far harder ...

For the first time, the US military shared an orbital selfie from its mysterious X-37B space plane, which captured Earth from ...

The gas giant WASP-121b, also known as Tylos, has an atmospheric structure unlike any we have ever seen, and the fastest ...

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar ...

Astronomers for the first time have deciphered the three-dimensional structure of the atmosphere of a planet beyond our solar ...

Rocket Lab launched a high-resolution Earth-imaging satellite toward low Earth orbit this evening (Feb. 18). An Electron ...

There's a lot less sky and a lot more moon in view for Firefly Aerospace's "Ghost Riders in the Sky" mission.