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Has any satellite gone beyond our Solar System?

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Introduction. The Latest: There are many planets beyond our own, and we know about some of them thanks to the help of citizen scientists. read more

It depends on what demarcates the end of the Solar System. The widely accepted demarcation [1] is the Heliopause, the theoretical boundary where the Sun’s wind is stopped by the interstellar medium. read more

Voyager 1 (top) has sailed beyond our solar bubble into interstellar space, the space between stars. Its environment still feels the solar influence. Voyager 2 (bottom) is still exploring the outer layer of the solar bubble. read more

Voyager 1 has gone where no spacecraft has ever gone before, rocketing through space at 37,000 miles an hour. But now the spacecraft is so far away from Earth it takes 17 hours to phone home. "The science we will get back from Voyager will change what we know about the universe, simply because we know so little beyond our solar system. read more

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