quarta-feira, 23 de novembro de 2016

Astronomy picture of the day - 2016 November 23 - NGC 7635: Bubble in a Cosmic Sea

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NGC 7635: Bubble in a Cosmic Sea 
Image Credit & Copyright: Sébastien Gozé
Explanation: Do you see the bubble in the center? Seemingly adrift in a cosmic sea of stars and glowing gas, the delicate, floating apparition in this widefield view is cataloged as NGC 7635 - The Bubble Nebula. A mere 10 light-yearswide, the tiny Bubble Nebula and the larger complex of interstellar gas and dust clouds are found about 11,000 light-years distant, straddling the boundary between the parental constellations Cepheus and Cassiopeia. Also included in the breathtaking vista is open star cluster M52 (upper left), some 5,000 light-years away. The featured image spans about two degrees on the sky corresponding to a width of about 375 light-years at the estimated distance of theBubble Nebula.