DEEP-SPACE PROBES

Before heading out of the Solar System, these five probes achieved some impressive firsts

3 December 1973 First spacecraft to Jupiter 1 Pioneer 10 came close enough to the giant planet to acquire a gravitational boost that ensured it would eventually escape from the Solar System into interstellar space. 1 September 1979 Inside Saturn’s rings 2 Pioneer 11 flew past Jupiter too, but it then went on to the next planet out, passing within 20,920 kilometres (13,000 miles) of Saturn – well inside the planet’s rings. 12 November 1980 Exploring the Saturnian system 3 Voyager 1 also visited Jupiter and Saturn, but with much more sophisticated instruments than Pioneer 11, taking spectacular close-up images of the ringed planet and its moon Titan. 24 January 1986 The rings of Uranus 4 Voyager 2 was the first probe to reach Uranus, the icy seventh planet, capturing…

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All About Space (Digital) - 1 Issue, No. 161

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