Assertion: spacecraft's mission | /r/HasProperty | accomplished in late 1970s
Facets:
value: by the two voyager probes
type: OTHER
value: ultimately
type: DEGREE
Source sentences:
text: This mission would ultimately be accomplished in the late 1970s by the two Voyager probes, but in order to prepare for it, NASA decided in 1964 to experiment with launching a pair of probes to the outer Solar System.