Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, ...

The agency announced on Monday afternoon (Feb. 10) that it has picked SpaceX to launch Pandora, a 716-pound (325-kilogram) satellite designed to help scientists better understand how our understanding ...

The planetary system is thought to move at least 1.2 million miles per hour. The post Astronomers discover fastest-moving ...

A star flying through the night sky may be the fastest-moving solar system in our galaxy. Possibly a planet a little larger than Neptune orbiting a small star, the system could be moving at least 1.2 ...

A rocky planet less than half the mass of Earth seems to have an atmosphere made almost entirely of sulphur dioxide – this ...

Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, ...

As planets pass in front of their parent stars as viewed from Earth, they cause a tiny dip in the amount of starlight we ...

"Temperamental" stars that brighten and dim over a matter of hours or days may be distorting our view of thousands of distant ...

WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...

An exoplanet is a planet outside our solar system that usually orbits a star in our galaxy. More than 7,000 have been found ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...