NASA's Kepler Mission Discovers Tiny Planet System (via PR Newswire)Download image WASHINGTON, Feb. 20, 2013 /PRNewswire-USNewswire/ -- NASA's Kepler mission scientists have discovered a new planetary system that is home to the smallest planet yet found around a star similar to our sun. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The planets are located…