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  2. Clyde Tombaugh - Wikipedia

    en.wikipedia.org/wiki/Clyde_Tombaugh

    Clyde William Tombaugh (/ ˈtɒmbaʊ /; February 4, 1906 – January 17, 1997) was an American astronomer. He discovered the ninth planet Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt. At the time of discovery, Pluto was considered a planet, but was reclassified as a dwarf planet in 2006.

  3. Pluto - Wikipedia

    en.wikipedia.org/wiki/Pluto

    Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest known trans-Neptunian object by volume, by a small margin, but is less massive than Eris.

  4. James W. Christy - Wikipedia

    en.wikipedia.org/wiki/James_W._Christy

    University of Arizona. Scientific career. Fields. Astronomy, astrometry. Institutions. United States Naval Observatory. Hughes Missile Systems. James Walter "Jim" Christy (born September 15, 1938) is an American astronomer known for discovering Charon, the largest moon of the dwarf planet Pluto.

  5. NASA's Pluto map is the most detailed look at the Dwarf ... - AOL

    www.aol.com/article/2016/05/03/nasas-pluto-map...

    NASA just released the most complete look at Pluto that we've ever seen by stitching together recently-released photos. NASA's Pluto map is the most detailed look at the Dwarf Planet we've ever ...

  6. Tombaugh Regio - Wikipedia

    en.wikipedia.org/wiki/Tombaugh_Regio

    Tombaugh Regio (/ ˈ t ɒ m b aʊ ˈ r ɛ dʒ i oʊ /), sometimes nicknamed "Pluto's heart" after its shape, [2] is the largest bright surface feature of the dwarf planet Pluto. [3] [4] [5] It lies just north of Pluto's equator, to the northeast of Belton Regio and to the northwest of Safronov Regio, which are both dark features. [6]

  7. Astronomers discover 'geological wonderland' on Pluto

    www.aol.com/astronomers-discover-geological...

    The dwarf planet Pluto, which is smaller than Earth's moon, orbits about 3.6 billion miles away from th. It's not just the air on Pluto that is cold -- the volcanoes on the dwarf plant are frigid ...

  8. Dwarf planet - Wikipedia

    en.wikipedia.org/wiki/Dwarf_planet

    A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be gravitationally rounded, but insufficient to achieve orbital dominance like the eight classical planets of the Solar System. The prototypical dwarf planet is Pluto, which for decades was regarded as a planet before the "dwarf" concept ...

  9. Why is Pluto not a planet anymore? - AOL

    www.aol.com/lifestyle/2020-05-26-why-is-pluto...

    Pluto was considered a planet up until 2006, when researchers at the International Astronomical Union voted to "demote" it to dwarf planet.