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Challenger Colles

Coordinates:23°03′N195°06′E / 23.050°N 195.100°E /23.050; 195.100
From Wikipedia, the free encyclopedia
Cluster of hills on Pluto
Challenger Colles
Feature typeHills
LocationEasternSputnik Planitia,Pluto
Coordinates23°03′N195°06′E / 23.050°N 195.100°E /23.050; 195.100[1]
Dimensions30 km × 60 km[2]
DiscovererNew Horizons
NamingSpace ShuttleChallenger

Challenger Colles is a range of hills onPluto near the eastern edge ofSputnik Planitia.[2] Discovered by theNew Horizons team in July 2015,[3] It is named in honor of the Space ShuttleChallenger, which wasdestroyed with all seven crew lost on January 28, 1986. The nameChallenger Colles was officially approved by theInternational Astronomical Union on May 27, 2022.[1]

Challenger Colles forms a roughly rectangular mass of blocks and mounts, each 1-5 km in diameter and up to several hundred meters high.[2] It is part of a broader belt of scattered hills across Sputnik Planitia's eastern regions which may be fragments of water ice "bedrock" which were eroded from the neighboringbright highlands. Glacial action could then transport these blocks into Sputnik Planitia, assolid nitrogen is denser than water ice;[4] Challenger Colles itself lies near a glacial "mouth", though it does not appear to have vigorous glacial flow at present.[2]

References

[edit]
  1. ^ab"Challenger Colles".Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program. (Center Latitude: 23.05°, Center Longitude: 195.10°)
  2. ^abcdHoward, Alan D.; Moore, Jeffrey M.; Umurhan, Orkan M.; et al. (May 2017). "Present and past glaciation on Pluto".Icarus.287: 287-300.Bibcode:2017Icar..287..287H.doi:10.1016/j.icarus.2016.07.006.
  3. ^Talbert, Tricia (4 February 2016)."Pluto's Mysterious, Floating Hills".nasa.gov.NASA. Archived fromthe original on 27 May 2016. Retrieved28 May 2016.
  4. ^White, Oliver L.; Moore, Jeffrey M.; McKinnon, William B.; et al. (May 2017). "Geological mapping of Sputnik Planitia on Pluto".Icarus.287: 261-286.Bibcode:2017Icar..287..261W.doi:10.1016/j.icarus.2017.01.011.
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