#OTD in 1985 I flew through the tail of comet Giacobini-Zinner. I was the first spacecraft to do something badass like this. #ISEE3pic.twitter.com/OpwcoGnIQ9
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#OTD in 1985 I flew through the tail of comet Giacobini-Zinner. I was the first spacecraft to do something badass like this. #ISEE3pic.twitter.com/OpwcoGnIQ9
