A telescope views patches of the universe in a rainbow of colors
Over the past decade, the Hubble Space Telescope has literally changed our view of the universe. Much of what we now understand about galaxy formation has been gleaned from Hubble staring for 10 days at a single tiny patch of sky. Within this region, the Earth-orbiting telescope has catalogued the shape, brightness, and color of galaxies that are only 500-millionths as bright as the eye can see. But if one sharp eye on the universe is good, then two, three, four, or more are better.