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Showing posts with label Planetary Nebula Abell 39. Show all posts
Showing posts with label Planetary Nebula Abell 39. Show all posts

Monday, October 8, 2012

Planetary Nebula Abell 39


Let's look at a planetary nebula nearly perfect spherical shape, whose name Abell 39 (Abell 39).
Today in our galaxy "Milky Way" is known more than 1500 planetary nebulae that are astronomical substance consisting of ionized gas shell and the central star - a white dwarf. Planetary nebulae are fast in astronomical terms the phenomenon, which lasts only a few tens of thousands of years. For comparison, the life of the parent star is a few billion years.