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Keywords: M 57, Ring Nebula
![Глубокое поле вокруг туманности Кольцо](https://images.astronet.ru/pubd/2009/11/06/0001236825/ringdeep_CAHA.preview.jpg)
6.11.2009
A familiar sight to sky enthusiasts with even a small telescope, the Ring Nebula (M57) is some 2,000 light-years away in the musical constellation Lyra. The central ring is about one light-year across...
![M57: туманность Кольцо](https://images.astronet.ru/pubd/2009/11/15/0001236976/ring_hst.preview.jpg)
15.11.2009
It looks like a ring on the sky. Hundreds of years ago astronomers noticed a nebula with a most unusual shape. Now known as M57 or NGC 6720, the gas cloud became popularly known as the Ring Nebula.
![Кольцевая туманность M57](https://images.astronet.ru/pubd/2004/07/04/0001198613/m57ring_hst.preview.jpg)
4.07.2004
Except for the rings of Saturn, the Ring Nebula (M57) is probably the most famous celestial band. This planetary nebula's simple, graceful appearance is thought to be due to perspective -- our view from planet Earth looking straight into what is actually a barrel-shaped cloud of gas shrugged off by a dying central star.
![M57: Туманность Кольцо](https://images.astronet.ru/pubd/2001/10/09/0001171122/ring_moo.preview.gif)
27.07.1995
A star with mass similar to that of our Sun will throw off its outer gasses after fusion has stopped in its core. Possibly the most visually spectacular of these planetary nebula is the pictured Ring Nebula. The appearance as a ring is really an illusion of projection - the nebula is actually a spherical shell.
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