The potential discovery of a large planet beyond Neptune’s orbit could change everything we know about the Solar System.

NASA's Director of Planetary Science, Jim Green, discusses the Jan. 20 2016 Astronomical Journal science paper that points to ...

You won't see a majestic line of planets on Jan. 25 the way people on social media are promising, but you will see four bright planets if you look up.

Sky gazers will get a peek at what has been called a "parade of planets," where this time around, up to seven planets may ...

A very rare treat is about to grace Earth's night skies.

Each evening, enjoy a sweeping view of four planets at once. Also look for Mars occulted by the Moon and meteors!

Astronomers have discovered 85 possible exoplanets outside the Solar System which could potentially sustain life after ...

The European Space Agency (ESA) and Japan Aerospace Exploration Agency (JAXA) launched the joint Mercury mission in 2018. The ...

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

The close-up images reveal craters, the floors of which are in permanent shadow, and vast sunlit northern plains.

James Woods has lost his Pacific Palisades home in the Southern California fires that continue to devastate parts of Los ...

Some stargazers are calling it a planetary parade: Every other planet in our solar system can be seen in the sky tonight.