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Sputnik 1
Teh first artificial sattelite in space!!! -
Mariner 2
Mariner 2 verified high temperatures on venus -
Pioneer 10
pioneer 10 was the first space probe to get past the astroid belt. -
Viking 1
Viking 1 mapped the surface of Mars it searched for life. -
Voyager 1 and Voyager 2
Vaoyager 1 and Voyager 2 space probes launched in 1977!!! -
Magellan
Mapped Venus's surface and returned the data.