With respect to @kchangnyt and the ion drive of @NASA_Dawn this feat was first managed 50 years ago next month by the crew of Apollo 8, who are all still with us.pic.twitter.com/pGUHt6nNuS
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Ah that is why we at JPL say
@NASA_Dawn was the first to orbit two extraterrestrial science targets -
Well-put and precise!
End of conversation
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