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Hubble image of Arp 220, also known as IC 4553. Arp 220 is the aftermath of a collision between two spiral galaxies. The collision set off a burst of star formation, creating star clusters seen as bluish-white bright knots in this image. This image is part of a collection of 59 images of merging galaxies released to celebrate Hubble's 18th anniversary in 2008. Credit: NASA, ESA, STScI, A. Evans Source:

NASA Science

Hubble Interacting Galaxy Arp 220 - NASA Science

Arp 220 appears to be a single, odd-looking galaxy, but is in fact a nearby example of the aftermath of a collision between two spiral galaxies. It...

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Hubble Space Telescope image of Arp 23, also known as NGC 4618. NGC 4618 is a single-armed barred spiral galaxy. It has a diameter of about a third that of the Milky Way. Its unusual shape may come from gravitational interactions with a neighboring galaxy NGC 4625, which is just out of frame. Credit: ESA, NASA, I. Karachentsev Source:

www.esahubble.org

Single Arm Galaxy

Single Arm Galaxy

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Hubble and Spitzer image of Arp 148, also known as Mayall's Object. The thick clouds of dusty material in the edge-on galaxy (left) glow brightly in the infrared wavelengths of light seen by Spitzer (red), while starlight dominates the visible light from Hubble (blue and green). The edge-on galaxy likely crashed through its companion, creating a ring and triggering a burst of star formation. Credit: NASA, JPL-Caltech, STScI Source:

Arp 148 (Visible & Infrared)

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Gran Telescopio Canarias image of Arp 84, also known as NGC 5394 and NGC 5395. This interacting pair is sometimes called the "Heron Galaxy". The larger spiral, NGC 5395 forms the body and wing of the heron and the smaller, two-armed NGC 5394 forms the neck, head, and beak of the bird. Credit: GTC, IAC Source: https://www.gtc.iac.es/multimedia/imageGallery.php #ArpGalaxy #Galaxy #Space #Astronony

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:

www.noirlab.edu

NGC 772

NGC 772

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Kitt Peak National Observatory image of Arp 18, also known as NGC 4088. NGC 4088 is an asymmetric spiral galaxy, located about 40 million light years away. Credit: KPNO, NOIRLab, NSF, AURA, Bonnie Fisher, Mike Shade, Adam Block Source:

www.noirlab.edu

NGC 4088

NGC 4088

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Kitt Peak image of Arp 286, also known as NGC 5560, NGC 5566, and NGC 5569. The three galaxies in this triplett are gravitationally interacting. NGC 5566 is the large spiral in the center. The small blue spiral galaxy to the bottom left is NGC 5569. The spiral galaxy to the top left is NGC 5560. Its distorted shape is likely due to interactions with NGC 5569. Credit: NOIRLab, NSF, AURA, T.A. Rector, H. Schweiker Source:

www.noirlab.edu

Arp 286 (NGC 5560, 5566 & 5569)

Arp 286 (NGC 5560, 5566 & 5569)

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Hubble image of Arp 204, also known as UGC 8454. This is likely at least two interacting galaxies connected by a long tidal tail. Encounters between the galaxies have distorted their shapes, making a somewhat puzzling mess. Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt Source: https://www.flickr.com/photos/geckzilla/48370370147/in/album-72157629527315128 #ArpGalaxy #Galaxy #Space #Astronony

Hubble and NuStar image of Arp 299, also known as NGC 3690. NuSTAR data overlaid on a Hubble image of the interacting galaxy pair show the galaxy on the right has an active supermassive black hole. It is accreting the surrounding gas and glowing brightly in X-rays. Credit: NASA, JPL-Caltech, GSFC Source: https://www.nustar.caltech.edu/image/nustar150108c #ArpGalaxy #Galaxy #Space #Astronony