Encyclopedia > Ring Nebula

Article Content

Ring Nebula

Larger image

The Ring Nebula in Lyra, also known as M57 or NGC 6720 is the most famous example of a planetary nebula. Located at 0.7 kpc (2300 light-years) from us, the nebula is illuminated by a white dwarf of 15.8 visual magnitude.

See also:

Messier 57 (http://www.seds.org/messier/m/m057), SEDS Messier pages

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Reformed churches

... in Germany was established under the Peace of Westphalia, in 1648, but political difficulties at the end of the 17th century almost eliminated them. In the 19th century, ...