Our Solar System is home to eight extraordinary planets, each with its own unique features, mysteries, and beauty. This cosmic journey takes you from the Sun-scorched surface of Mercury to the icy ...

When most people think of our Solar System, they think of the 8 planets officially recognized by the International Astronomical Union (IAU). But what if I told you there are at least 40 planets, and ...

The sun is by far the largest object in our solar system, containing 99.8% of the solar system's mass. It sheds most of the heat and light that makes life possible on Earth and possibly elsewhere.

The Sun is orbited by eight planets, at least five dwarf planets, tens of thousands of asteroids, and around three trillion comets and icy bodies. Although not all objects of the solar system are ...

Don't worry though—it's not like one planet simply fell out of the solar system. We'll explain what happened and also show you some tricks for remembering the order of all of the planets that ...

All eight of the solar system’s “major” planets appear in this illustration, but the actual number of planetary bodies orbiting our star is far greater.

The eight-planet system that was discovered with the help of NASA’s Kepler space telescope and artificial intelligence orbits a star called Kepler 90 some 2,545 light years away. A solar system ...

The discovery of Kepler-90i marks the first-known eight-planet solar system aside from our own—and there may be many more. NASA / Wendy Stenzel. To use this ...

The planet parade is not an extremely rare occurrence — it tends to happen at least every couple of years. In fact, the eight-planet alignment last happened in June .

The eight planets in our solar system orbit the sun in roughly the same plane, because they all originally formed from the same disc of debris around the sun.