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Aug. 24, 2006: Pluto Deplanetized
By Tony Long and Doug Cornelius 2006: Pluto, once the ninth planet from the sun, is downgraded to a mere “dwarf planet.” Our solar system loses a favorite kid brother and now has, officially, only...
View ArticleAug. 25, 1989: Voyager 2, Meet Neptune
1989: Voyager 2 makes its closest encounter with Neptune, passing just 3,000 miles above the cloud tops of the most distant planet in our solar system. The Voyager 2 space probe has been our most...
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June 13, 1983: Pioneer 10 Reaches an End … and a Beginning
1983: Pioneer 10 becomes the first human-made object to pass outside Pluto’s orbit and leave the central solar system. Pioneer 10 must be considered one of the most successful spacecraft of all time....
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Jan. 19, 2006: NASA’s New Horizons Blasts Off Toward Pluto
NASA successfully launches the New Horizons probe, beginning a 10-year mission to Pluto and other objects in the Kuiper Belt, a little-studied band of debris from the formation of the Solar System.
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