So how does
#NASA steer a spacecraft~
3 billion miles to #Pluto
and not get lost?
.@kchangnyt
http://nyti.ms/1Hp2riJ
So how does #NASA steer a spacecraft 3 billion miles to #Pluto and not get lost?http://nyti.ms/1Hp2riJ
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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@kchangnyt In praise of deep space navigation.Thanks. Twitter will use this to make your timeline better. UndoUndo
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