Kayrros: from tracking oil by satellite to tackling the climate emergency

The Soviet Union launched the first satellite into space in October 1957. The craft, Sputnik, was the size of a beach ball, weighed 83.6kg and orbited the Earth once every 98 minutes. Though it burnt up in the atmosphere four months later, Sputnik was the starting gun for the space race and the thousands of satellites that have launched since.

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