Spiral galaxy NGC 4945

Spiral galaxy NGC 4945

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Credit: EUROPEAN SOUTHERN OBSERVATORY/SCIENCE PHOTO LIBRARY

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Caption: Spiral galaxy NGC 4945. Optical image of the galaxy NGC 4945, a Seyfert 2 spiral galaxy in the constellation Centaurus. Seyfert galaxies have an unusually bright nucleus. The nucleus of this galaxy is a Seyfert type 2, which does not appear unusually bright at visible wavelengths, but is a powerful emitter of infrared radiation. The power source for a Seyfert nucleus is thought to be a large black hole. NGC 4945 hides a supermassive black hole behind the thick, ring-shaped structure of dust visible in this image. Image obtained by the Danish telescope at the ESO (European Southern Observatory) La Silla Observatory, Chile.

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Keywords: 1, active, astronomical, astronomy, astrophysical, astrophysics, centaurus, centaurus a, cosmology, eso, european southern observatory, galactic, galaxy, la silla, ngc 4945, nucleus, one, planetary science, science, seyfert 2, seyfert-2, single, space, spiral galaxy, star, starry, stars, supermassive black hole, telescope, type 2

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