Astronomers working with NASA's Hubble Space Telescope have deduced the actual color of a planet orbiting another star 63 light-years away. The planet is HD 189733b, and its color is cobalt blue. If seen directly, this planet would look like a deep blue dot, reminiscent of Earth's color as seen from space.
FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2013/11jul_cobaltblue/
