Before Saturn and Neptune team up to leave Venus in the dust later in the month. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Friday, May 2, ...
Why it's so special: Only one spacecraft has ever visited the eighth and most distant planet from the sun. On Aug. 25, 1989, NASA's Voyager 2 spacecraft took the first-ever close-up images of Neptune.
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