July 27, 1995
Your life began on a planet that never stops moving under a sky that never stops changing.
M57: The Ring Nebula
Birthday · July 27, 1995
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APOD published July 27, 1995. Full image credits are on the original APOD entry below. A publication-date match, not a photo taken on your date. Independent of NASA.
July 27, 1995 M57: The Ring Nebula Credit: The Electronic Universe Project, Nelson Caldwell Explanation: A star with mass similar to that of our Sun will throw off its outer gasses after fusion has stopped in its core. Possibly the most visually spectacular of these planetary nebula is the pictured Ring Nebula. The appearance as a ring is really an illusion of projection - the nebula is actually a spherical shell. At the center a blue dot is visible which is the old core of the star, known as a white dwarf. It is still not known exactly how the star throws off the gas that becomes the nebula. For more information on the Ring Nebula see The Electronic Universe Project's write-up. Many images of Messier objects can be found in The Electronic Universe Project's The Galaxy Gallery: Messier Objects.