Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...

Astronomers have peered into an alien planet's atmosphere and found extreme weather unlike anything in the solar system.

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

There could be planets around the supermassive black hole at the heart of our galaxy – and we may be ready to find them, scientists say. That hope comes after researchers found the first ever ...

Mashable Light Speed Want more out-of-this world tech ... Hurt (Caltech-IPAC) A conception of a super-Neptune planet orbiting a star in our galaxy. Credit: NASA / JPL-Caltech / R.

Watch this video to find out more about the Earth, planets in our Solar System and ... Our Sun is just one of many billions of stars in our galaxy, which is called the Milky Way.

An object we thought belonged to the most common category of planet in the galaxy has turned out to be something we've never ...

Scientists have discovered the first-ever binary star system near Sagittarius A*, the supermassive black hole at the centre of our galaxy ... as "amazing" in mapping out the Milky Way's evolution.

And yes, they'll be in a line. But because planets always appear in a line from our Earth-bound vantage, the alignment isn't anything out of the norm. What's less common, according to astronomers ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

Temperamental' stars that brighten and dim over a matter of hours or days may be distorting our view of thousands ... how large the planet is, as it will seem to block out more of the star's ...