From planets that rain diamonds to moons with hidden oceans, the Solar System holds more mysteries than most realize. These ...

Think you’ve heard it all about our cosmic neighborhood? From diamond rain to exploding moons, these 10 new facts prove the ...

Uncover fascinating and lesser-known facts about our solar system! Discover why you can't stand on Uranus, which moon has more water than Earth, and how long a year is on Mercury. Explore these ...

Now the comet is among the fastest things in the solar system. It whizzes past the inner planets at around 100,000 miles an hour (160,000 kilometers an hour).

Saturn is home to the Solar System’s most epic ice rink. Being so far from the Sun, the water in its rings is frozen into ice. It is one of four planets that have rings around them - the other ...

This quiz will test your ability to name them all—and maybe even learn a few fun facts along the way. Can you name all the planets in order in the solar system? Try our new quiz to find out!

The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, ...

The Moon was formed about 50 million years after the solar system came into being, according to a study which suggests that the lunar body is significantly older than previously believed.

Our planet is the only one in the solar system to have water in its liquid form, which allows it to support life. 71% of Earth's surface is covered in water and the oceans help to keep the ...

At the edge of our solar system, a host of large, icy bodies make up the Oort cloud, which appears to sport two spiral arms reminiscent of a disk-shaped galaxy. New research founded upon a simulation ...