| 
Credit & Copyright: ESO/WFI (visible);   
MPIfR/ESO/APEX/A. Weiss et al. (microwave);   
NASA/CXC/CfA/R. Kraft et al. (X-ray);   
 Inset:  NASA/TANAMI/C. Mщller   
et al. (radio)   
   
Explanation:
Jets of streaming   
plasma   
expelled by the central black hole of a massive spiral galaxy     
light up this composite image of   
Centaurus A.   
   
The jets emanating from   
Cen A are over a million light years long.   
   
Exactly how the   
central black hole   
expels infalling matter is still unknown.   
   
After clearing the galaxy, however,   
the jets inflate large   
radio bubbles that likely glow for millions of years.   
   
If excited by a passing front, radio bubbles can even light up again after a billion   
years.   
   
X-ray light is depicted in the   
above composite image in blue, while   
microwave light is false-colored orange.     
   
The inset image in radio light shows newly imaged,   
never seen-before details of the innermost light year of the   
central jet.   
   
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: Centaurus A - spiral galaxy - jet
Publications with words: Centaurus A - spiral galaxy - jet
See also:

