... the Helix Nebula (NGC 7293), a well studied and nearby example of a Planetary Nebula ... Publications with keywords: planetary nebula - Helix Nebula - NGC 7293 . ... Publications with words: planetary nebula - Helix Nebula - NGC 7293 . See also: . ...
... M27 or the Dumbbell Nebula , is a planetary nebula , the type of nebula our Sun will ... with keywords: M27 - planetary nebula - dumbbell nebula - Messier catalog ... Publications with words: M27 - planetary nebula - dumbbell nebula - Messier catalog ...
... U. Based on Astronomy Picture Of the Day . Publications with keywords: bipolar - planetary nebula - butterfly nebula . ... Publications with words: bipolar - planetary nebula - butterfly nebula . See also: . The Medusa Nebula . ...
... Credit: Nigel Sharp ( NOAO ), AURA , NSF Explanation: One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion , is part of a large, dark, molecular cloud . ...
... The Helix Nebula is one of brightest and closest examples of a planetary nebula , a ... Publications with keywords: NGC 7293 - Helix Nebula - planetary nebula . ... Publications with words: NGC 7293 - Helix Nebula - planetary nebula . See also: . ...
... Astronomy Picture of the Day . Shapley 1: An Annular Planetary Nebula . << Yesterday . 16.08.2011 . Tomorrow >> . ... center condenses into a white dwarf while the outer atmospheric layers are expelled into space and appear as a planetary nebula ...
... U. Based on Astronomy Picture Of the Day . Publications with keywords: Cat's Eye Nebula - NGC 6543 - planetary nebula . ... Publications with words: Cat's Eye Nebula - NGC 6543 - planetary nebula . See also: . The Medusa Nebula . ...