... Inside the Eagle Nebula . ... A closer look at the Eagle Nebula, however, shows the bright region is actually a window into the center of a larger dark shell of dust. ... The telescope mirror, about the size of the Hubble Space Telescope mirror, is protected by a red covering. ... In fact, early last week RS Oph suddenly became visible to the naked eye for the first time since 1985. ... An Unusually Smooth Surface on Saturns Telesto . ... M51: The Whirlpool Galaxy in Dust and Stars . ...