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  • Pluto - Wikipedia
    Pluto was discovered in 1930 by Clyde W Tombaugh, making it the first known object in the Kuiper belt It was immediately hailed as the ninth planet However, [16]: 27 its planetary status was questioned when it was found to be much smaller than expected
  • Pluto: Facts - NASA Science
    Discovered in 1930, Pluto was long considered our solar system's ninth planet But after the discovery of similar worlds deeper in the Kuiper Belt, Pluto was reclassified as a dwarf planet in 2006 by the International Astronomical Union
  • Pluto and Lowell Observatory
    On February 18, 1930, Clyde Tombaugh discovered Pluto Thus kicked off a hectic time for the entire observatory staff, as they worked furiously to gather as much data as possible about the new planet
  • 10 Important Dates in Pluto History | Britannica
    This Encyclopedia Britannica list highlights 10 important dates in the exploration of Pluto, from its discovery in 1930 to the flyby of New Horizons in 2015 and beyond
  • Could Pluto Once Again Be Considered a Planet? New Remarks From NASAs . . .
    Could Pluto Once Again Be Considered a Planet? New Remarks From NASA’s Administrator Highlight an Enduring Debate Among Scientists Two decades ago, the International Astronomical Union—which
  • NASA chief Jared Isaacman hints at campaign to make Pluto a planet . . .
    Pluto was originally classified as a planet after its discovery in 1930 But changes to the consensus definition of a planet led to the International Astronomical Union (IAU)—the world’s
  • The Story of How Pluto Was Discovered 95 Years Ago
    On February 18, 1930, astronomer Clyde Tombaugh discovered Pluto at the Lowell Observatory The search began in 1929, using the information gathered by both Lowell and Pickering
  • Discovering Pluto - Origins
    The discovery was officially announced on March 13, 1930, a date rich with significance as it marked what would have been Percival Lowell’s 75th birthday as well as the anniversary of Uranus’s discovery in 1781 The new planet was named Pluto, after the Roman god of the underworld


















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