ESA's planet-defending Hera mission will set a new record in space. The asteroid investigator will not only be the first spacecraft to explore a binary asteroid system - the Didymos pair - but the smaller of these two worldlets, comparable in size to Egypt's Great Pyramid of Giza, will become the smallest asteroid ever visited.
ESA's planet-defending Hera mission will set a new record in space. The asteroid investigator will not only be the first spacecraft to explore a binary asteroid system - the Didymos pair - but the smaller of these two worldlets, comparable in size to Egypt's Great Pyramid of Giza, will become the smallest asteroid ever visited.
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