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Do you want to learn more about space?

What's the difference between an asteroid, a meteor, and a comet? NASA fills you in.

Learn about the Sun's ever-changing surface and the tools scientists use to predict solar storms in these videos and quizzes. Think you'd like to be a scientist yourself? Then check out the Meet the Experts page to see how these scientists got their start.

Like a diamond in the sky...how are stars and planets formed? What relationships exist in the solar system? Find out in these videos from the European Space Agency.