Celestial hemisphere:  Southern  ·  Constellation: Centaurus (Cen)  ·  Contains:  Centaurus A  ·  NGC 5128
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Centaurus A, Patrick Stevenson
Centaurus A
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Centaurus A

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Centaurus A, Patrick Stevenson
Centaurus A
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Centaurus A

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Description

Centaurus A (also known as NGC 5128 or Caldwell 77) is a galaxy in the constellation of Centaurus.   The center of the galaxy contains a supermassive black hole with a mass of 55 million solar masses,=10.5px   which ejects a relativistic jet that is responsible for emissions in the X-ray and radio wavelengths. By taking radio observations of the jet separated by a decade, astronomers have determined that the inner parts of the jet are moving at about half of the speed of light. X-rays are produced farther out as the jet collides with surrounding gases, resulting in the creation of highly energetic particles. The X-ray jets of Centaurus A are thousands of light-years long, while the radio jets are over a million light-years long

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Centaurus A, Patrick Stevenson

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