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The 12 Missions of Christmas

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Saturn and its moons Tehtys and Dione

Voyager took this image of Saturn and its moons Tehtys and Dione in 1980.

Credit: NASA

In July 1965, Mariner 4 became the first space probe to send back pictures of another world from space. Fifty years on, not only do several spacecraft orbit the same red planet, but there are also two active rovers on the Martian surface and new missions being prepared for launch.

From BBC News
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