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Mystery as “alien” radio signal blips 2,000 times in past two months
Scientists believe the signals come from collapsed stars - but some have suggested they might be evidence of extraterrestrial civilisations
Reusable “Susie” spacecraft could launch future European deep-space missions
ArianeGroup's "Susie" is a fully reusable craft designed to fit future rockets, one of which is being made right now for Arianespace