So exactly how many solar system moons have we found? The answer, it turns out, depends on your definition of a moon. The International Astronomical Union (IAU) officially recognizes 288 planetary ...

There are also moons in the solar system, that is objects orbiting around the planets. In fact just over 180 moons at the last count. And some of those moons are so large that if they were ...

Watch this video to find out more about the Earth, planets in our Solar System and other planets far ... asteroids, or moons that broke up before they reached the planet. As well as its rings ...

About 4.6 billion years ago, this gigantic cloud was transformed into our Sun. The processes that followed gave rise to the solar system, complete with eight planets, 181 moons, and countless ...

The discovery points to what astronomers have thought for decades, that Saturn's rings were caused by a massive collision about 100 million years ago.

With a radius of 2,106 miles, Mars is the seventh largest planet in our solar system and about half the ... its two small and irregularly shaped moons, Phobos and Deimos. The two lumpy worlds ...

Now, using a powerful NASA supercomputer called "Pleiades," scientists have discovered yet another spiral structure on the edge of our solar system. The spiral is composed of billions of icy ...

Astronomers have discovered 128 new moons orbiting Saturn, further solidifying the planet as the "moon king" of our solar system. Astronomers from Taiwan, Canada, France and the U.S. announced the ...