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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.
Maps produced from images taken by the Hubble Space Telescope (HST), together with Pluto's light curve and the periodic variations in its infrared spectra, indicate that Pluto's surface is very varied, with large differences in both brightness and color, [11] with albedos between 0.49 and 0.66. [12]
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]
NASA has released a map of Pluto's surface made from images recently taken by the New Horizons probe and it includes some quite mysterious features. Particularly notable is the lightened area ...
This new view of Pluto's crescent stunningly highlights the dwarf planet's varied terrains, extended atmosphere and familiar Arctic look.
It is about half the diameter and an eighth the mass of Pluto, a dwarf planet that resides in a frigid region of the outer Solar System called the Kuiper Belt, beyond the most distant planet Neptune.
Belton Regio (formerly Cthulhu Macula or Cthulhu Regio [1] [2]) is a prominent surface feature of the dwarf planet Pluto. [3] It is an elongated dark region along Pluto's equator, 2,990 km (1,860 mi) long and one of the darkest features on its surface.
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