Originally posted by Wikinews. Wikinews content appears under the Creative Commons Attribution 2.5 license except where specified. As these articles are static snapshots of news items that may be later updated, they may not represent the latest or final revision of that article, and posted information may be only preliminary. NASA releases complete image of Pluto's crescent ------------------------------------------------------------------------------- October 31, 2015 Original URL: https://en.wikinews.org/wiki/NASA_releases_complete_image_of_Pluto%27s_crescent On Thursday, NASA released the first complete picture of Pluto's crescent from the ''New Horizons'' probe. The probe captured the image with its Multi-spectral Visible Imaging Camera (MVIC) on July 14, fifteen minutes after closest approach to the planet. After nine years' journey, ''New Horizons'' made closest approach to Pluto on July 14 and released the first coloured photo of the 's atmospheric haze on October 8. An incomplete crescent photo of Pluto was released in September. The photo shows different layers of the haze of Pluto's faint atmosphere with Sputnik Planum, an icy plain, visible on the right side and uneven on the dark left side. ==Charon's Craters == Scientists also announced their discovery that 5km wide Organa crater on Charon, the largest satellite of Pluto, absorbed large amount of radiation of 2.2µm in an scan, evidence of frozen ammonia. A nearby crater, named ''Skywalker'', of comparable size showed the presence of water ice. Will Grundy from the ''New Horizons'' composition team said "Why are these two similar-looking and similar-sized craters, so near to each other, so compositionally distinct?" He also proposed various ideas about the abundance of ammonia. The impact creating the crater could be more recent, or may have hit a subsurface ammonia pocket, or brought ammonia with it. Studies in 2000 revealed that Charon has ammonia, but its concentration in the Organa crater was extraordinarily high. Bill Mc Kinnon, New Horizons Geology, Geophysics and Imaging deputy lead, called it "a fantastic discovery". He further said "Concentrated ammonia is a powerful antifreeze on icy worlds, and if the ammonia really is from Charon’s interior, it could help explain the formation of Charon's surface by cryovolcanism, via the eruption of cold, ammonia-water magmas." ---- == Related news == * * == Sources == * http://www.nasa.gov/feature/the-youngest-crater-on-charon * http://www.nasa.gov/image-feature/a-full-view-of-pluto-s-stunning-crescent * http://arstechnica.com/science/2015/10/new-horizons-returns-stunning-image-of-pluto-backlit-by-the-sun/ * http://www.theverge.com/2015/10/29/9639330/nasa-new-horizons-pluto-new-image-backlit .