ocr: What IS a space probe? Long before people ever reached the Moon, many unmanned spacecratt, known as space probes, visited its surtace. Rockets are used to launch probes into space 111 order to fly past or around specific targets. Some even release a second craft to land on the surface of their destination. Space probes carry scientitic equipment on board to enable them to carry our investigations. The data then gets transmitted back to Earth. Space probes travel hundreds of millions ofkilometers from Earth for years at a time. Most complete their journeys, but not all. For example, Mars-96 had ...
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