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.

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 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 ...

If you are a budding astronomer or simply enjoy watching the sky through a telescope, you probably have an interest in all of the planets in our solar system. There are a total of eight planets ...

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

Think of our solar system like a big family. The Sun is the parent, and the eight planets are like siblings. Each planet is unique, just like how every person in a family is different.

The planets of the solar system were lined up in the sky Wednesday night in an astronomical phenomenon, visible from Earth, known as a "planet parade." The phenomenon, which was also visible ...

A light-year is 5.8 trillion miles. A pair of planet-hunting satellites — NASA's Tess and the European Space Agency's Cheops — teamed up for the observations that discovered the solar system.