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Galaxy ESO 005-G004

This spiral galaxy belongs to a class of galaxies with active nuclei discovered in July 2007. Like Seyfert-galaxies, quasars or blazars, it contains a supermassive black hole, which swallows large amounts of matter from its surrounding and thereby emits strong radiation. Different from those galaxies, this one is hidden behind thick dust and therefore difficult to see. So it's no surprise that this kind of galaxies has been found so late. ESO 005-G004 was one of two of this kind which has been discovered, multiple others are suspected.

Constellation: Octans
Distance: 80 million light-years
Type: Sa D

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    ESO 005-G004
The galaxy nucleus with the hidden black hole.
Graphic: Aurore Simonnet, Sonoma State University

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