... The Rosette Nebula in Hydrogen and Oxygen . ... The Rosette Nebula is not the only cosmic cloud of gas and dust to evoke the imagery of flowers -- but it is the most famous. ... Which is older -- the rocks you see on the ground or the light you see from the sky? ... Connecting the Pipe Nebula to the colorful region near bright star Antares is a dark cloud dubbed the Dark River, flowing from the picture's left edge. ... 45 Days in the Sun . ... Dark Craters and Bright Spots Revealed on Asteroid Ceres...