Valin Posted October 8, 2019 Share Posted October 8, 2019 Oct 7 2019 The Halley Armada, Giotto, Vega 1 and 2, Suisei and Sakigake, all visited Halley's Comet at roughly the same time in 1986. What did they discover? Why was this such a groundbreaking mission? https://brilliant.org/astrum/ Link to comment Share on other sites More sharing options...
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