Skip to comments.Astronomy Picture of the Day -- Polar Ring Galaxy NGC 660
Posted on 11/10/2012 9:57:08 AM PST by SunkenCiv
Explanation: NGC 660 is featured in this cosmic snapshot, a sharp composite of broad and narrow band filter image data from the Gemini North telescope on Mauna Kea. Over 20 million light-years away and swimming within the boundaries of the constellation Pisces, NGC 660's peculiar appearance marks it as a polar ring galaxy. A rare galaxy type, polar ring galaxies have a substantial population of stars, gas, and dust orbiting in rings nearly perpendicular to the plane of the galactic disk. The bizarre-looking configuration could have been caused by the chance capture of material from a passing galaxy by a disk galaxy, with the captured debris eventually strung out in a rotating ring. The violent gravitational interaction would account for the myriad pinkish star forming regions scattered along NGC 660's ring. The polar ring component can also be used to explore the shape of the galaxy's otherwise unseen dark matter halo by calculating the dark matter's gravitational influence on the rotation of the ring and disk. Broader than the disk, NGC 660's ring spans over 50,000 light-years.
(Excerpt) Read more at 220.127.116.11 ...
My apologies, I got a few days behind on the APoD!
Any planet in the outer ring would have an awesome view of their galaxy.
That’s God’s version of a Pollack I believe.
‘X’ marks the spot...
Hot cross bun! Perfect Christmas image, if a bit early.
Also, thanks for the GGG stuff. It's never boring reading your posts, and those with similar interests.
What a break from the rest of the day it provides!
Quit talking about my ass.
But Civ! You have such a cute one!
I may burro that picture for something.
Just don’t bray about it.
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