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See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A flyby of Uranus in 1986 is where we gathered much of our knowledge ...
Uranus and Neptune remain two of the most mysterious objects in the solar system, primarily because they have been visited only by NASA's Voyager 2 spacecraft in 1986 and 1989, respectively. Their ...