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A space revolution: do tiny satellites threaten our privacy?

Scores of small ‘CubeSats’ circle our planet 24/7, surveilling everything from shrinking glaciers to fleeing refugees – but do they put our privacy at risk?

By John Thornhill

Scores of small ‘CubeSats’ circle our planet 24/7, surveilling everything from shrinking glaciers to fleeing refugees – but do they put our privacy at risk?