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‘Deep Space’: Space is full of… space. Scientists have always been fascinated by what space is (or is not) and by what passes through. Many probes with scientific instruments aboard have been sent out to discover what is in ‘deep space’, and to monitor the effects of the sun on the solar system and solar storms, and how they affect communications on earth. In the early 1970’s Helios 1 and Helios 2 were launched to monitor solar activity. No object had orbited closer to the sun than the Helios’.