While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

(Ianm35/iStock/Getty Images Plus) The Solar System is one of the comforting constants of human existence. No matter what else ...

A village in Kent is home to what is thought to be the world's largest scale model of the solar system and beyond, created to ...

The hunt for Planet Nine continues as new discoveries make the Solar System’s biggest mystery even harder to solve. Is there ...

A meteorite found in the Sahara is forcing scientists to rethink what kinds of worlds once circled the young sun. The rock, ...

What is Planet Nine, and where is it? The question has fascinated astronomers for years. Scientists believe a massive ...

In 1995, scientists made a revolutionary find with the discovery of 51 Pegasi b, a massive exoplanet in a tight orbit around ...

Astronomers have spent years searching for a possible hidden giant planet far beyond Neptune. Unusual orbits among distant ...

Jupiter has 79 moons and is known as the 'king of the planets'. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Jupiter is the largest planet in ...

Venus takes about 243 Earth days to complete a single rotation, and it does so in the opposite direction from nearly every ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder of ...