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Helios ProbesThe Helios deep space probes were launched in the mid 1970s by the Federal Republic of Germany with the co-operation of NASA. There were two in the series, Helios I and Helios II. They were launched to orbit and measure the Sun. They also set the a speed record for spacecraft at 252,800 km/h. The name Helios has also been used for a NASA experimental aircraft, the Helios Prototype, and a French military photo-reconnoissance satellite, the Helios 1B. External links
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