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I Blew It Off

Credit: ESA/Hubble & NASA; Acknowledgement: M. Novak
Tuesday, July 28, 2015: Planetary nebula NGC 6565 glows in space, as seen by NASA/ESA’s Hubble Space Telescope. This object consists of a dying star’s…Read More »





last remnants, after it has blown its outer layers into space. A cloud of gas surrounds the now-exposed luminous core, which excites the gas, causing it to radiate in various colors. Planetary nebulas remain illuminated for about 10,000 years before the central star begins to cool, and shrinks to become a white dwarf. (Planetary nebulas have nothing to do with planets, but were so named owing to misidentification by William Herschel as he viewed these objects in his telescope.) Image released July 27, 2015.

— Tom Chao   Less «
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