https://linkatopia.com/TheDudeDean/nebula A link tagged, "Nebula" by TheDudeDean http://apod.nasa.gov/apod/ap101005.html 2010-10-05T00:22:24Z Explanation: The dark Horsehead Nebula and the glowing Orion Nebula are contrasting cosmic vistas. Adrift 1,500 light-years away in one of the night sky's most recognizable constellations, they appear in opposite corners of the above stunning mosaic. The