Is it a bird? Is it a plane? No, it's super Neptune! But this Superman-mimicking planet is not blasting through space on its ...

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.

On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, ...

NASA scientists have detected a star and trailing exoplanet that may be sailing through the Milky Way with unprecedented ...

On Feb. 7, a connection that only happens every 18 years will occur: Neptune and the North Node are conjunct in the dreamy ...

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

"Pale Blue Dot" – one of the last photos taken by Voyager 1 – is still the most distant image of the Earth. Astronomer Carl ...

NASA said the system is thought to be moving at least 1.2 million miler per hour, nearly twice as fast as our solar system.

Astronomers at the NASA Goddard Space Flight Center may have discovered a star hurtling through the Milky Way with a planet ...