Posted on Feb 20, 2022
APOD: 2022 February 19 - Peculiar Galaxies of Arp 273
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Good morning, Rallypoint, and welcome to a Sunday two-fer Astronomy Picture of the Day (APOD). Our first image is from February 19th: "Peculiar Galaxies of Arp 273." There are two types of peculiar galaxies: interacting and those with active galactic nuclei (AGN). These two clearly fall into the first category. Arp 273 lies 300 million light years away in the constellation Andromeda.
APOD: 2022 February 19 - Peculiar Galaxies of Arp 273
Posted from apod.nasa.gov
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Posted 3 y ago
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Beautiful star system galaxies of Arp 273, Maj William W. 'Bill' Price! I wonder what else will be shown when the JWST is fully operational and commissioned...
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Thank you my space-exploration advocate friend Maj William W. 'Bill' Price for posting the February 19th Astronomy Picture of the Day (APOD): ‘Peculiar Galaxies of Arp 273.’
Image: Peculiar Galaxies of Arp 273.
Explanation: The spiky stars in the foreground of this backyard telescopic frame are well within our own Milky Way Galaxy. But the two eye-catching galaxies lie far beyond the Milky Way, at a distance of over 300 million light-years. Their distorted appearance is due to gravitational tides as the pair engage in close encounters. Cataloged as Arp 273 (also as UGC 1810), the galaxies do look peculiar, but interacting galaxies are now understood to be common in the universe. Nearby, the large spiral Andromeda Galaxy is known to be some 2 million light-years away and approaching the Milky Way. The peculiar galaxies of Arp 273 may offer an analog of their far future encounter. Repeated galaxy encounters on a cosmic timescale can ultimately result in a merger into a single galaxy of stars. From our perspective, the bright cores of the Arp 273 galaxies are separated by only a little over 100,000 light-years.
Image: Peculiar Galaxies of Arp 273.
Explanation: The spiky stars in the foreground of this backyard telescopic frame are well within our own Milky Way Galaxy. But the two eye-catching galaxies lie far beyond the Milky Way, at a distance of over 300 million light-years. Their distorted appearance is due to gravitational tides as the pair engage in close encounters. Cataloged as Arp 273 (also as UGC 1810), the galaxies do look peculiar, but interacting galaxies are now understood to be common in the universe. Nearby, the large spiral Andromeda Galaxy is known to be some 2 million light-years away and approaching the Milky Way. The peculiar galaxies of Arp 273 may offer an analog of their far future encounter. Repeated galaxy encounters on a cosmic timescale can ultimately result in a merger into a single galaxy of stars. From our perspective, the bright cores of the Arp 273 galaxies are separated by only a little over 100,000 light-years.
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