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Spacewalkers fling satellites into orbit by hand to track bird behaviour

Spacewalking cosmonauts have flung tiny satellites into orbit and set up an antenna for tracking birds on Earth. Russian Sergey Prokopyev released four research satellites by hand, with the first tumbling away as the International Space Station soared 402 kilometres above Illinois. External Link:Twitter: "The spacewalking cosmonauts Oleg Artemyev and …

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