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 The "Blinking Eye"
Nebula is a planetary nebula--the expanding shell of glowing
gas cast off by a dying star that in its life was about the
size of our Sun. Our skies are filled with these
bubbles, but since they are relatively small as astronomical
objects go (on the order of a light year across) and not
very bright (the star that formed the nebula is in the
process of dying, and no longer shines with its original
intensity), we need telescopes to see them.
The Blinking Eye
Nebula is about 2,200 light years away, in the constellation
of Cygnus the Swan. |
