File:Hubble Space Telecope image of galaxies NGC 545 and NGC 547.webp

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Summary

Description	English: This NASA Hubble Space Telescope image reveals NGC 547, an elliptical galaxy that sits about 250 million light-years away from Earth in the constellation Cetus. NGC 547 shines just below the center of this image, with its companion galaxy NGC 545 near the upper left. Collectively, the pair is known as Arp 308. NGC 547 is a bright radio galaxy, meaning it has giant regions of radio emission extending well beyond its visible structure. The lobes of radio emission are powered by jets from the active galactic nucleus, or AGN, at its center. Galaxies with active galactic nuclei have an extremely bright region at their cores where a supermassive black hole exists. As dust and gas fall into the black hole it emits light across the entire electromagnetic spectrum. Radio galaxies are one of the most energetic astrophysical phenomena. Hubble observed this galaxy as part of a survey for a dataset meant to help in continuing tests of scientific theories about AGNs.
Date	7 April 2023
Source	https://science.nasa.gov/missions/hubble/hubble-spots-an-energetic-galaxy/
Author	NASA, ESA, J. Blakeslee (NOIRLab - (AZ)), and W. Sparks (SETI Institute); Processing: Gladys Kober (NASA/Catholic University of America)

Licensing

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	16:50, 26 January 2024		1,782 × 1,579 (70 KB)	Phantomdj	Uploaded a work by NASA, ESA, J. Blakeslee (NOIRLab - (AZ)), and W. Sparks (SETI Institute); Processing: Gladys Kober (NASA/Catholic University of America) from https://science.nasa.gov/missions/hubble/hubble-spots-an-energetic-galaxy/ with UploadWizard

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File:Hubble Space Telecope image of galaxies NGC 545 and NGC 547.webp

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NGC 545

NGC 547

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public domain

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