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Saturday, April 26, 2014

Astronomy Picture of the Day

Massive Nearby Spiral Galaxy NGC 2841 

It is one of the more massive galaxies known. A mere 46 million light-years distant, spiral galaxy NGC 2841 can be found in the northern constellation of Ursa Major.

This sharp view of the gorgeous island universe shows off a striking yellow nucleus and galactic disk. Dust lanes, small, pink star-forming regions, and young blue star clusters are embedded in the patchy, tightly wound spiral arms. 

In contrast, many other spirals exhibit grand, sweeping arms with large star-forming regions. 

NGC 2841 has a diameter of over 150,000 light-years, even larger than our own Milky Way and captured by this composite image merging exposures from the orbiting 2.4-meter Hubble Space Telescope and the ground-based 8.2-meter Subaru TelescopeX-ray images suggest that resulting winds and stellar explosions create plumes of hot gas extending into a halo around NGC 2841.



See Explanation.  Clicking on the picture will download
 the highest resolution version available.
Image Credit: HubbleSubaruComposition & Copyright: Robert Gendler