Need a new idea to keep kids entertained? Try stargazing. Free learning activities and videos about the solar system Free learning activities and videos about the solar system Free learning ...

Data processing for NASA's Solar Dynamics Observatory and IRIS probe are down for a while, thanks to a burst water pipe in a server room used by the missions.

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Even so, there are parts of the distant Solar System that we know about, such as the Kuiper Belt. It's all good and well knowing facts about space, but how do you get there? Find out here.

Also one of the facts about planets is that Mars had a thick atmosphere in the past. It is believed to have water in the past ...

The spacecraft—humanity's most distant probe—managed to resumed contact by switching to a secondary radio not used since 1981 ...

Narrator: Serious scientists, like myself, believe our solar system was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun.

Much of the understanding of the seventh planet comes from a brief flyby nearly 40 years ago, which researchers now say overlapped with an exceptional solar event.