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July 10, 2015 02:00 pm
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/sSjmdkPwUPw/lifting-the-veil-on-plutos-atmosphere
Lifting the Veil On Pluto's Atmosphere
New submitter Pedro Braganca sends an update on the New Horizons mission to Pluto, now less than four days to closest approach. While we're waiting, NASA has published the best images of Pluto and Charon yet seen. We're starting to be able to make out surface details: A high-contrast array of bright and dark features covers Pluto's surface, while on Charon, only a dark polar region interrupts a generally more uniform light gray terrain. The reddish materials that color Pluto are absent on Charon. Pluto has a significant atmosphere; Charon does not. On Pluto, exotic ices like frozen nitrogen, methane, and carbon monoxide have been found, while Charon's surface is made of frozen water and ammonia compounds. The interior of Pluto is mostly rock, while Charon contains equal measures of rock and water ice.A countdown to closest approach is present on the New Horizons mission page, as well as the raw image feed.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/sSjmdkPwUPw/lifting-the-veil-on-plutos-atmosphere
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