The image combines blue, red and infrared images taken by ... you might have memorized that there were nine planets in our solar system, as heard in the famous Schoolhouse Rock!

Scientists solve solar system mystery after freak accident at planetarium show - The Oort Cloud’s true shape has remained ...

Scientists have discovered new characteristics of a small body which orbits the sun between Jupiter and Neptune, providing more clues about the origins of the Solar System. Chiron is a unique ...

Have intelligent aliens ever visited the solar system? It's not a ridiculous question ... In a new paper, scientists outline how we can look for clues any visitors may have left behind.

A "hyperactive" comet that is due to make its closest approach to Earth in less than two weeks' time will give scientists a window into the early days of our solar system billions of years ago.

Check out the rest of the series. If you were born in the last century you might have memorized that there were nine planets in our solar system, as heard in the famous Schoolhouse Rock!

Pluto isn’t a planet — but it gives us clues for how the solar system formed This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe.

So, during the summer of 2006, members of the International Astronomical Union convened in Prague to reconsider what counts as a planet in our solar system. IAU members decided that there were ...