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Astronomy Picture of the Day

Posted By Editor On December 3, 2011 @ 7:35 am In Photo Essays | Comments Disabled

A fantastic jumble of young blue star clusters, gigantic glowing gas clouds, and imposing dark dust lanes surrounds the central region of the active galaxy Centaurus A. This image from the Hubble Space Telescope has been processed to present a natural color picture of this cosmic maelstrom. Infrared images from the Hubble have also shown that hidden at the center of this activity are what seem to be disks of matter spiraling into a black hole with a billion times the mass of the Sun

 

 

centaursA 670x608 Astronomy Picture of the Day [1]

 

Across the Center of Centaurus A 
Image Credit: NASA [2]ESA [3], and the Hubble Heritage [4] (STScI [5]/AURA [6]) - ESA [3]/Hubble Collaboration; Acknowledgement: R. O’Connell [7] (U. Virginia [8])

Explanation: A fantastic jumble of young blue star clusters, gigantic glowing gas clouds, and imposing dark dust [9] lanes surrounds the central region of the active galaxy [10] Centaurus A. This image from the Hubble Space Telescope [11] has been processed to present a natural color picture of this cosmic maelstrom. Infrared images [12] from the Hubble have also shown that hidden at the center [13] of this activity are what seem to be disks of matter spiraling into a black hole [14] with a billion times the mass of the Sun. Centaurus A [15] itself is apparently the result of a collision of two galaxies [16] and the left over debris is steadily being consumed by the black hole [17]Astronomers [18] believe that such black hole central engines [19] generate the radio, X-ray, and gamma-ray energy [20] radiated by Centaurus A and other active galaxies [21]. But for an active galaxy [22] Centaurus A [23] is close, a mere 10 million light-years [24] away, and is a relatively convenient laboratory for exploring these powerful sources of energy [25].


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URLs in this post:

[1] Image: http://www.berthoudrecorder.com/wp-content/uploads/2011/12/centaursA.jpg

[2] NASA: http://www.nasa.gov/

[3] ESA: http://www.spacetelescope.org/

[4] Hubble Heritage: http://heritage.stsci.edu/

[5] STScI: http://www.stsci.edu/portal/

[6] AURA: http://www.aura-astronomy.org/

[7] R. O’Connell: http://www.astro.virginia.edu/~rwo/

[8] U. Virginia: http://www.astro.virginia.edu/

[9] dust: http://en.wikipedia.org/wiki/Cosmic_dust

[10] active galaxy: http://imagine.gsfc.nasa.gov/docs/science/know_l1/active_galaxies.html

[11] This image from the Hubble Space Telescope: http://hubblesite.org/newscenter/archive/releases/2011/18/image/a/

[12] Infrared images: http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ir_tutorial/what_is_ir.html

[13] at the center: http://www.youtube.com/watch?v=wYQoNHc1hug

[14] a black hole: http://apod.nasa.gov/apod/ap970516.html

[15] Centaurus A: http://en.wikipedia.org/wiki/Centaurus_A

[16] collision of two galaxies: http://apod.nasa.gov/apod/ap020202.html

[17] black hole: http://apod.nasa.gov/apod/ap971107.html

[18] Astronomers: http://heritage.stsci.edu/2011/18/bio/bio_primary.html

[19] central engines: http://apod.nasa.gov/apod/ap020309.html

[20] radio, X-ray, and gamma-ray energy: http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html

[21] active galaxies: http://chandra.harvard.edu/xray_sources/quasars.html

[22] active galaxy: http://www.astro.virginia.edu/~jh8h/glossary/activegalaxy.htm

[23] Centaurus A: http://apod.nasa.gov/apod/ap021111.html

[24] light-years: http://chandra.harvard.edu/photo/cosmic_distance.html

[25] powerful sources of energy: http://apod.nasa.gov/apod/ap110531.html

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