Crescent Nebula (NGC 6888) is an emission nebula in constellation Cygnus - a northern constellation lying on plane of the Milky Way. Hubble colors show emission from sulfur, hydrogen, & oxygen atoms in the wind-blown nebula in red, green & blue hues.
The Great Nebula in Orion (M42), an immense, nearby starbirth region, is probably the most famous of all astronomical nebulas. Here, glowing gas surrounds hot young stars at the edge of an immense interstellar molecular cloud only 1500 light-years away.
IC 4628: The Prawn Nebula (Sept 7 2012) Image Credit & Copyright: Marco Lorenzi (Glittering Lights) Explanation: South of Antares, in the tail of the nebula-rich constellation Scorpius, lies emission nebula IC 4628. Nearby hot, massive stars, millions of years young, radiate the nebula with invisible ultraviolet light, stripping electrons from atoms. The electrons eventually recombine with the atoms to produce the visible nebular glow, dominated by the red emission of hydrogen. #astronomy