Ring Nebula


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Related to Ring Nebula: planetary nebula
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Ring Nebula
NGC 6720

Ring Nebula

 (rĭng)
n.
A planetary nebula in the constellation Lyra.
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References in periodicals archive ?
M27 is a planetary nebula--an ejected cloud from an aged star becoming a white dwarf--like the Ring Nebula, M57 in Lyra.
M57, the Ring Nebula, is now at an altitude of 60[degrees] and with a magnitude of 9.
Washington, May 24 ( ANI ): New observations by NASA's Hubble Space Telescope have revealed the real shape of the Ring Nebula.
5 million light years away - and the Ring Nebula, a dying white dwarf star surrounded by fluorescing gas.
While observing this part of the sky, set yourself a challenge by seeing if you can spot deep sky Messier object M57, the famous Ring Nebula in the constellation of Lyra.
Volunteers line up the night's wonders one by one: the Whirlpool Galaxy, the Ring Nebula, a globular cluster in the constellation Hercules, a binary star system.
Popular shots include images of a whirlpool galaxy and ring nebula, a blue mass of gas surrounded by striking yellow and orange.
But the Ring Nebula - one of the most spectacular objects in the universe - is now able to be studied on Earth, thanks to the Hubble Space Telescope.
Fesen of the University of Colorado at Boulder started by looking at Wolf-Rayet stars surrounded by a ring nebula -- a shell of expanding gas very close to the star.
Mayfield explains what happened: "Their original objective was to sight in onsome of the fainter stars, but, to their surprise and excitement, they inadvertently focused on a ring nebula and received outstanding resolution.
One of the most famous is the Ring Nebula (M57) in Lyra, which Antoine Darquier independently discovered with a small refractor while observing the Comet of 1779.
But a lot more magnification reveals it as a dimly glowing doughnut: M57, the Ring Nebula.