File:Andromeda active core.jpg

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Description This artist's concept shows a view across a mysterious disk of young, blue stars encircling a supermassive black hole at the core of the neighboring Andromeda Galaxy (M31). The region around the black hole is barely visible at the center of the disk. The background stars are the typical older, redder population of stars that inhabit the cores of most galaxies. Spectroscopic observations by the Hubble Space Telescope reveal that the blue light consists of more than 400 stars that formed in a burst of activity about 200 million years ago. The stars are tightly packed in a disk that is only a light-year across. Under the black hole's gravitational grip, the stars are traveling very fast: 2.2 million miles an hour (3.6 million kilometers an hour, or 1,000 kilometers a second) Object Names: M31, Andromeda Galaxy, NGC 224.
Date September 20, 2005 01:00 PM (EDT)
Source Hubble Telescope site
Author NASA, ESA and A. Schaller (for STScI)
Permission
(Reusing this file)
Public domain This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

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current19:55, 1 March 2010Thumbnail for version as of 19:55, 1 March 20105,000 × 3,750 (22.51 MB)wikimediacommons>TryphonHigher resolution, from http://imgsrc.hubblesite.org/hu/db/images/hs-2005-26-b-full_jpg.jpg.

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