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Ptah

(33,024 posts)
Sun Nov 9, 2014, 12:19 PM Nov 2014

The Cat's Eye Nebula from Hubble




Image Credit: NASA, ESA, HEIC, and The Hubble Heritage Team (STScI/AURA)

Explanation: To some, it may look like a cat's eye. The alluring Cat's Eye nebula, however,
lies three thousand light-years from Earth across interstellar space. A classic planetary nebula,
the Cat's Eye (NGC 6543) represents a final, brief yet glorious phase in the life of a sun-like star.
This nebula's dying central star may have produced the simple, outer pattern of dusty concentric
shells by shrugging off outer layers in a series of regular convulsions. But the formation of the
beautiful, more complex inner structures is not well understood. Seen so clearly in this digitally
sharpened Hubble Space Telescope image, the truly cosmic eye is over half a light-year across.
Of course, gazing into this Cat's Eye, astronomers may well be seeing the fate of our sun,
destined to enter its own planetary nebula phase of evolution ... in about 5 billion years.


http://apod.nasa.gov/apod/ap141109.html

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The Cat's Eye Nebula from Hubble (Original Post) Ptah Nov 2014 OP
nice foto mitchtv Nov 2014 #1
Very interesting newfie11 Nov 2014 #2
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