https://freerepublic.com/tag/barnard68/ en-us Sun, 14 Dec 2014 16:07:43 GMT Focus Forum 15 https://freerepublic.com/focus/f-chat/3237078/posts Explanation: Where did all the stars go? What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud. Here, a high concentration of dust and molecular gas absorb practically all the visible light emitted from background stars. The eerily dark surroundings help make the interiors of molecular clouds some of the coldest and most isolated places in the universe. One of the most notable of these dark absorption nebulae is a cloud toward the constellation Ophiuchus known as Barnard 68, pictured above. That no stars are visible in the center indicates... NASA https://freerepublic.com/focus/f-chat/3237078/posts#comment Sun, 14 Dec 2014 16:07:43 GMT https://freerepublic.com/focus/f-chat/2839652/posts Explanation: Where did all the stars go? What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud. Here, a high concentration of dust and molecular gas absorb practically all the visible light emitted from background stars. The eerily dark surroundings help make the interiors of molecular clouds some of the coldest and most isolated places in the universe. One of the most notable of these dark absorption nebulae is a cloud toward the constellation Ophiuchus known as Barnard 68, pictured above. That no stars are visible in the center indicates... NASA https://freerepublic.com/focus/f-chat/2839652/posts#comment Sun, 29 Jan 2012 17:56:22 GMT