The Year in Pictures -- 2006                             A Gallery of JPL Images 1 2 3 4 5 6 7 8 9 10 11 12 Amazing Andromeda Our galactic neighbor, the Andromeda galaxy, is seen in ultraviolet and infrared in this combined image from NASA's Galaxy Evolution Explorer and Spitzer Space Telescope. Young, hot, high-mass stars are shown in blue, while populations of relatively older stars are green dots. The bright yellow spot at the galaxy's center depicts a particularly dense population of old stars. Swaths of red indicate cool, dusty regions where stars are forming. + Full image and caption     Jet Propulsion Laboratory    California Institute of Technology