#arpgalaxy — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #arpgalaxy, aggregated by home.social.
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Kitt Peak image of Arp 78, also known as NGC 772.
One of NGC 772’s spiral arms is particularly prominent. This is likely due to gravitational interactions with its companion galaxy NGC 770, the small elliptical galaxy in the center near the top of the frame. The interactions left NGC 772's bottom arm elongated and asymmetrical.
Credit: KPNO, NOIRLab, NSF, AURA, A. Block
Source: https://noirlab.edu/public/images/noao-n772block/ -
Kitt Peak image of Arp 78, also known as NGC 772.
One of NGC 772’s spiral arms is particularly prominent. This is likely due to gravitational interactions with its companion galaxy NGC 770, the small elliptical galaxy in the center near the top of the frame. The interactions left NGC 772's bottom arm elongated and asymmetrical.
Credit: KPNO, NOIRLab, NSF, AURA, A. Block
Source: https://noirlab.edu/public/images/noao-n772block/ -
Kitt Peak image of Arp 78, also known as NGC 772.
One of NGC 772’s spiral arms is particularly prominent. This is likely due to gravitational interactions with its companion galaxy NGC 770, the small elliptical galaxy in the center near the top of the frame. The interactions left NGC 772's bottom arm elongated and asymmetrical.
Credit: KPNO, NOIRLab, NSF, AURA, A. Block
Source: https://noirlab.edu/public/images/noao-n772block/ -
Kitt Peak image of Arp 78, also known as NGC 772.
One of NGC 772’s spiral arms is particularly prominent. This is likely due to gravitational interactions with its companion galaxy NGC 770, the small elliptical galaxy in the center near the top of the frame. The interactions left NGC 772's bottom arm elongated and asymmetrical.
Credit: KPNO, NOIRLab, NSF, AURA, A. Block
Source: https://noirlab.edu/public/images/noao-n772block/ -
Kitt Peak image of Arp 78, also known as NGC 772.
One of NGC 772’s spiral arms is particularly prominent. This is likely due to gravitational interactions with its companion galaxy NGC 770, the small elliptical galaxy in the center near the top of the frame. The interactions left NGC 772's bottom arm elongated and asymmetrical.
Credit: KPNO, NOIRLab, NSF, AURA, A. Block
Source: https://noirlab.edu/public/images/noao-n772block/ -
Hubble image of Arp 224, also known as NGC 3921.
NGC 3921 is a pair of interacting disk galaxies that are in the late stages of a merger. The history of this merger is recorded in the tails and loops that surround the center.
The galaxies were about the same mass and likely collided about 700 million years ago.
Credit: ESA, NASA, J. Schmidt
Source: https://esahubble.org/images/potw1537a/ -
Hubble image of Arp 224, also known as NGC 3921.
NGC 3921 is a pair of interacting disk galaxies that are in the late stages of a merger. The history of this merger is recorded in the tails and loops that surround the center.
The galaxies were about the same mass and likely collided about 700 million years ago.
Credit: ESA, NASA, J. Schmidt
Source: https://esahubble.org/images/potw1537a/ -
Hubble image of Arp 224, also known as NGC 3921.
NGC 3921 is a pair of interacting disk galaxies that are in the late stages of a merger. The history of this merger is recorded in the tails and loops that surround the center.
The galaxies were about the same mass and likely collided about 700 million years ago.
Credit: ESA, NASA, J. Schmidt
Source: https://esahubble.org/images/potw1537a/ -
Hubble image of Arp 224, also known as NGC 3921.
NGC 3921 is a pair of interacting disk galaxies that are in the late stages of a merger. The history of this merger is recorded in the tails and loops that surround the center.
The galaxies were about the same mass and likely collided about 700 million years ago.
Credit: ESA, NASA, J. Schmidt
Source: https://esahubble.org/images/potw1537a/ -
Hubble image of Arp 224, also known as NGC 3921.
NGC 3921 is a pair of interacting disk galaxies that are in the late stages of a merger. The history of this merger is recorded in the tails and loops that surround the center.
The galaxies were about the same mass and likely collided about 700 million years ago.
Credit: ESA, NASA, J. Schmidt
Source: https://esahubble.org/images/potw1537a/ -
Image of Arp 298, also known as NGC 7469 and IC 5283, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Unclassified objects. NGC 7469, the face-on spiral galaxy, and its companion galaxy IC 5283, form an interacting pair.
IC 5283 shows signs of gravitational perturbations caused by its companion, including a tidal tail.
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Image of Arp 298, also known as NGC 7469 and IC 5283, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Unclassified objects. NGC 7469, the face-on spiral galaxy, and its companion galaxy IC 5283, form an interacting pair.
IC 5283 shows signs of gravitational perturbations caused by its companion, including a tidal tail.
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Image of Arp 298, also known as NGC 7469 and IC 5283, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Unclassified objects. NGC 7469, the face-on spiral galaxy, and its companion galaxy IC 5283, form an interacting pair.
IC 5283 shows signs of gravitational perturbations caused by its companion, including a tidal tail.
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Image of Arp 298, also known as NGC 7469 and IC 5283, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Unclassified objects. NGC 7469, the face-on spiral galaxy, and its companion galaxy IC 5283, form an interacting pair.
IC 5283 shows signs of gravitational perturbations caused by its companion, including a tidal tail.
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Image of Arp 298, also known as NGC 7469 and IC 5283, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Unclassified objects. NGC 7469, the face-on spiral galaxy, and its companion galaxy IC 5283, form an interacting pair.
IC 5283 shows signs of gravitational perturbations caused by its companion, including a tidal tail.
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Image of Arp 18, also known as NGC 4088, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Detached segments. NGC 4088 is an asymmetric spiral galaxy, located about 40 million light years away.
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Image of Arp 18, also known as NGC 4088, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Detached segments. NGC 4088 is an asymmetric spiral galaxy, located about 40 million light years away.
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Image of Arp 18, also known as NGC 4088, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Detached segments. NGC 4088 is an asymmetric spiral galaxy, located about 40 million light years away.
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Image of Arp 18, also known as NGC 4088, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Detached segments. NGC 4088 is an asymmetric spiral galaxy, located about 40 million light years away.
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Image of Arp 18, also known as NGC 4088, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Detached segments. NGC 4088 is an asymmetric spiral galaxy, located about 40 million light years away.
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Hubble image of Arp 184, also known as NGC 1961.
NGC 1961 is an extremely massive spiral galaxy with irregular arms. Its near side has a large spiral arm dotted with blue star clusters that appears to stretch toward us. Its far side lacks a similarly impressive arm.
Credit: ESA, NASA, J. Dalcanton, R. J. Foley, C. Kilpatrick
Source: https://esahubble.org/images/potw2517a/ -
Hubble image of Arp 184, also known as NGC 1961.
NGC 1961 is an extremely massive spiral galaxy with irregular arms. Its near side has a large spiral arm dotted with blue star clusters that appears to stretch toward us. Its far side lacks a similarly impressive arm.
Credit: ESA, NASA, J. Dalcanton, R. J. Foley, C. Kilpatrick
Source: https://esahubble.org/images/potw2517a/ -
Hubble image of Arp 184, also known as NGC 1961.
NGC 1961 is an extremely massive spiral galaxy with irregular arms. Its near side has a large spiral arm dotted with blue star clusters that appears to stretch toward us. Its far side lacks a similarly impressive arm.
Credit: ESA, NASA, J. Dalcanton, R. J. Foley, C. Kilpatrick
Source: https://esahubble.org/images/potw2517a/ -
Hubble image of Arp 184, also known as NGC 1961.
NGC 1961 is an extremely massive spiral galaxy with irregular arms. Its near side has a large spiral arm dotted with blue star clusters that appears to stretch toward us. Its far side lacks a similarly impressive arm.
Credit: ESA, NASA, J. Dalcanton, R. J. Foley, C. Kilpatrick
Source: https://esahubble.org/images/potw2517a/ -
Hubble image of Arp 184, also known as NGC 1961.
NGC 1961 is an extremely massive spiral galaxy with irregular arms. Its near side has a large spiral arm dotted with blue star clusters that appears to stretch toward us. Its far side lacks a similarly impressive arm.
Credit: ESA, NASA, J. Dalcanton, R. J. Foley, C. Kilpatrick
Source: https://esahubble.org/images/potw2517a/ -
Image of Arp 12, also known as NGC 2608, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Split arms. NGC 2608 is a barred spiral galaxy in the constellation Cancer.
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Image of Arp 12, also known as NGC 2608, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Split arms. NGC 2608 is a barred spiral galaxy in the constellation Cancer.
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Image of Arp 12, also known as NGC 2608, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Split arms. NGC 2608 is a barred spiral galaxy in the constellation Cancer.
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Image of Arp 12, also known as NGC 2608, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Split arms. NGC 2608 is a barred spiral galaxy in the constellation Cancer.
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Image of Arp 12, also known as NGC 2608, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Split arms. NGC 2608 is a barred spiral galaxy in the constellation Cancer.
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Image of Arp 201, also known as UGC 224, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. Arp 201 is an interacting galaxy pair.
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Image of Arp 201, also known as UGC 224, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. Arp 201 is an interacting galaxy pair.
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Image of Arp 201, also known as UGC 224, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. Arp 201 is an interacting galaxy pair.
-
Image of Arp 201, also known as UGC 224, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. Arp 201 is an interacting galaxy pair.
-
Image of Arp 201, also known as UGC 224, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. Arp 201 is an interacting galaxy pair.
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Image of Arp 271, also known as NGC 5426 and NGC 5427, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Connected arms. The mutual gravitational interaction of this pair of spiral galaxies distorts their shapes and creates a bridge of gas, dust and young stars that connect the galaxies.
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Image of Arp 271, also known as NGC 5426 and NGC 5427, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Connected arms. The mutual gravitational interaction of this pair of spiral galaxies distorts their shapes and creates a bridge of gas, dust and young stars that connect the galaxies.
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Image of Arp 271, also known as NGC 5426 and NGC 5427, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Connected arms. The mutual gravitational interaction of this pair of spiral galaxies distorts their shapes and creates a bridge of gas, dust and young stars that connect the galaxies.
-
Image of Arp 271, also known as NGC 5426 and NGC 5427, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Connected arms. The mutual gravitational interaction of this pair of spiral galaxies distorts their shapes and creates a bridge of gas, dust and young stars that connect the galaxies.
-
Image of Arp 271, also known as NGC 5426 and NGC 5427, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Connected arms. The mutual gravitational interaction of this pair of spiral galaxies distorts their shapes and creates a bridge of gas, dust and young stars that connect the galaxies.
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Canada-France-Hawaii Telescope image of Arp 189, also known as NGC 4651 or the Umbrella Galaxy.
The galaxy gets its nickname from the parasol-shaped feature to the right. It is a stellar stream made of debris from the remains of a tiny galaxy that was ripped apart by the large spiral galaxy.
Credit: Canada-France-Hawaii Telescope, Coelum
Source: https://www.cfht.hawaii.edu/HawaiianStarlight/AIOM/English/CFHT-Coelum-AIOM-Oct2025.html -
Canada-France-Hawaii Telescope image of Arp 189, also known as NGC 4651 or the Umbrella Galaxy.
The galaxy gets its nickname from the parasol-shaped feature to the right. It is a stellar stream made of debris from the remains of a tiny galaxy that was ripped apart by the large spiral galaxy.
Credit: Canada-France-Hawaii Telescope, Coelum
Source: https://www.cfht.hawaii.edu/HawaiianStarlight/AIOM/English/CFHT-Coelum-AIOM-Oct2025.html -
Canada-France-Hawaii Telescope image of Arp 189, also known as NGC 4651 or the Umbrella Galaxy.
The galaxy gets its nickname from the parasol-shaped feature to the right. It is a stellar stream made of debris from the remains of a tiny galaxy that was ripped apart by the large spiral galaxy.
Credit: Canada-France-Hawaii Telescope, Coelum
Source: https://www.cfht.hawaii.edu/HawaiianStarlight/AIOM/English/CFHT-Coelum-AIOM-Oct2025.html -
Canada-France-Hawaii Telescope image of Arp 189, also known as NGC 4651 or the Umbrella Galaxy.
The galaxy gets its nickname from the parasol-shaped feature to the right. It is a stellar stream made of debris from the remains of a tiny galaxy that was ripped apart by the large spiral galaxy.
Credit: Canada-France-Hawaii Telescope, Coelum
Source: https://www.cfht.hawaii.edu/HawaiianStarlight/AIOM/English/CFHT-Coelum-AIOM-Oct2025.html -
Canada-France-Hawaii Telescope image of Arp 189, also known as NGC 4651 or the Umbrella Galaxy.
The galaxy gets its nickname from the parasol-shaped feature to the right. It is a stellar stream made of debris from the remains of a tiny galaxy that was ripped apart by the large spiral galaxy.
Credit: Canada-France-Hawaii Telescope, Coelum
Source: https://www.cfht.hawaii.edu/HawaiianStarlight/AIOM/English/CFHT-Coelum-AIOM-Oct2025.html -
Legacy Surveys image of Arp 201, also known as UGC 224.
Arp 201 is an interacting galaxy pair.
Credit: Legacy Surveys, D. Lang, NERSC, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_201_legacy_dr10.jpg -
Legacy Surveys image of Arp 201, also known as UGC 224.
Arp 201 is an interacting galaxy pair.
Credit: Legacy Surveys, D. Lang, NERSC, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_201_legacy_dr10.jpg -
Legacy Surveys image of Arp 201, also known as UGC 224.
Arp 201 is an interacting galaxy pair.
Credit: Legacy Surveys, D. Lang, NERSC, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_201_legacy_dr10.jpg -
Legacy Surveys image of Arp 201, also known as UGC 224.
Arp 201 is an interacting galaxy pair.
Credit: Legacy Surveys, D. Lang, NERSC, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_201_legacy_dr10.jpg -
Legacy Surveys image of Arp 201, also known as UGC 224.
Arp 201 is an interacting galaxy pair.
Credit: Legacy Surveys, D. Lang, NERSC, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_201_legacy_dr10.jpg -
Hubble Space Telescope image of Arp 4.
This image contains two galaxies, a larger irregular galaxy, Arp 4, and a small spiral galaxy PGC 6629.
In this image, the luminosity comes from Hubble ACS/WFC observations, and color comes from PanSTARRS.
Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt, Pan-STARRS
Source: https://www.flickr.com/photos/geckzilla/54270938249/ -
Hubble Space Telescope image of Arp 4.
This image contains two galaxies, a larger irregular galaxy, Arp 4, and a small spiral galaxy PGC 6629.
In this image, the luminosity comes from Hubble ACS/WFC observations, and color comes from PanSTARRS.
Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt, Pan-STARRS
Source: https://www.flickr.com/photos/geckzilla/54270938249/ -
Hubble Space Telescope image of Arp 4.
This image contains two galaxies, a larger irregular galaxy, Arp 4, and a small spiral galaxy PGC 6629.
In this image, the luminosity comes from Hubble ACS/WFC observations, and color comes from PanSTARRS.
Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt, Pan-STARRS
Source: https://www.flickr.com/photos/geckzilla/54270938249/ -
Hubble Space Telescope image of Arp 4.
This image contains two galaxies, a larger irregular galaxy, Arp 4, and a small spiral galaxy PGC 6629.
In this image, the luminosity comes from Hubble ACS/WFC observations, and color comes from PanSTARRS.
Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt, Pan-STARRS
Source: https://www.flickr.com/photos/geckzilla/54270938249/ -
Hubble Space Telescope image of Arp 4.
This image contains two galaxies, a larger irregular galaxy, Arp 4, and a small spiral galaxy PGC 6629.
In this image, the luminosity comes from Hubble ACS/WFC observations, and color comes from PanSTARRS.
Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt, Pan-STARRS
Source: https://www.flickr.com/photos/geckzilla/54270938249/ -
Image of Arp 6, also known as NGC 2537 or the Bear’s Paw Galaxy, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Low surface brightness. It's horseshoe structure may be the result of a shockwave from a nuclear starburst.
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Image of Arp 6, also known as NGC 2537 or the Bear’s Paw Galaxy, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Low surface brightness. It's horseshoe structure may be the result of a shockwave from a nuclear starburst.
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Image of Arp 6, also known as NGC 2537 or the Bear’s Paw Galaxy, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Low surface brightness. It's horseshoe structure may be the result of a shockwave from a nuclear starburst.
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Image of Arp 6, also known as NGC 2537 or the Bear’s Paw Galaxy, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Low surface brightness. It's horseshoe structure may be the result of a shockwave from a nuclear starburst.
-
Image of Arp 6, also known as NGC 2537 or the Bear’s Paw Galaxy, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Low surface brightness. It's horseshoe structure may be the result of a shockwave from a nuclear starburst.