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M57: The Ring Nebula
Uploaded by
GoldSpider
, Jul 17 2016 09:14 AM
- Owner: GoldSpider (View all images and albums)
- Uploaded: Jul 17 2016 09:14 AM
- Views: 626
- Album: DSOs
The Ring Nebula is a planetary nebula in the northern constellation of Lyra. Such objects are formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf. -Wikipedia
