December 13, 2012
Day 13 of the 2012 Hubble Space Telescope Advent Calendar, one of 25 photos (eventually). A team of astronomers using NASA’s Hubble Space Telescope reported the discovery of a fifth moon orbiting the icy dwarf planet Pluto on July 11, 2012. The moon is estimated to be irregular in shape and 6 to 15 miles across. It is in a 58,000-mile-diameter circular orbit around Pluto that is assumed to be co-planar with the other satellites in the system. Provisionally designated S/2012 (134340) 1, or P5, the latest moon was detected in nine separate sets of images taken by Hubble’s Wide Field Camera 3 on June 26, 27, and 29, 2012 and July 7 and 9, 2012. This discovery increases the number of known moons orbiting Pluto to five. Pluto is at center, and, counterclockwise, from top left, are its moons Nix, P5 (very small), Hydra, Charon, and P4. (NASA, ESA, and M. Showalter, SETI Institute)

Day 13 of the 2012 Hubble Space Telescope Advent Calendar, one of 25 photos (eventually). A team of astronomers using NASA’s Hubble Space Telescope reported the discovery of a fifth moon orbiting the icy dwarf planet Pluto on July 11, 2012. The moon is estimated to be irregular in shape and 6 to 15 miles across. It is in a 58,000-mile-diameter circular orbit around Pluto that is assumed to be co-planar with the other satellites in the system. Provisionally designated S/2012 (134340) 1, or P5, the latest moon was detected in nine separate sets of images taken by Hubble’s Wide Field Camera 3 on June 26, 27, and 29, 2012 and July 7 and 9, 2012. This discovery increases the number of known moons orbiting Pluto to five. Pluto is at center, and, counterclockwise, from top left, are its moons Nix, P5 (very small), Hydra, Charon, and P4. (NASA, ESA, and M. Showalter, SETI Institute)

8:42am  |   URL: http://tmblr.co/Z0ayzvZEu50U
  
Filed under: nasa Astronomy hubble awesome 
  1. forwardslashreality reblogged this from atlanticinfocus and added:
    I’m not sure why, but this story of the discovery of P5 has always got me excited
  2. atlanticinfocus posted this