File:Two’s company (potw2414a).jpg
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Summary
editDescriptionTwo’s company (potw2414a).jpg |
English: This image features Arp 72, a very selective galaxy group that only includes two interacting galaxies: NGC 5996 (the large spiral galaxy) and NGC 5994 (its smaller companion, in the lower left of the image). Both galaxies lie approximately 160 million light-years from Earth, and their cores are separated from each other by a distance of around 67 thousand light-years. Moreover, the distance between the galaxies at their closest points is even smaller, closer to 40 thousand light-years. Whilst this might still sound vast, in galactic separation terms it is really very cosy! For comparison, the distance between the Milky Way and its nearest independent galactic neighbour Andromeda is around 2.5 million light-years. Alternatively, the distance between the Milky Way and its largest and brightest satellite galaxy, the Large Magellanic Cloud (satellite galaxies are galaxies that are bound in orbit around another galaxy), is about 162 thousand light-years. Given this, coupled with the fact that NGC 5996 is roughly comparable in size to the Milky Way, it is not surprising that NGC 5996 and NGC 5994 — apparently separated by only 40 thousand light-years or so — are interacting with one another. In fact, the interaction might be what has caused the spiral shape of NGC 5996 to distort and apparently be drawn in the direction of NGC 5994. It also prompted the formation of the very long and faint tail of stars and gas curving away from NGC 5996, up to the top right of the image. This ‘tidal tail’ is a common phenomenon that appears when galaxies get in close together, as can be seen in several Hubble images.[Image Description: A large spiral galaxy with a smaller neighbouring galaxy. The spiral galaxy is wide and distorted, with colourful dust. Its companion lies close by it at the end of a spiral arm, to the lower left. A long, faint tail of stars reaches up from the right side of the spiral galaxy to the top of the image. Several small, distant galaxies can be seen in the background, as well as one bright star in the foreground.] |
Date | 1 April 2024 (upload date) |
Source | Two’s company |
Author | ESA/Hubble & NASA, L. Galbany, J. Dalcanton, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA |
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current | 09:01, 1 April 2024 | ![]() | 3,884 × 3,107 (2.79 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://cdn.esahubble.org/archives/images/large/potw2414a.jpg via Commons:Spacemedia |
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Source | ESA/Hubble |
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Credit/Provider | ESA/Hubble & NASA, L. Galbany, J. Dalcanton, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA |
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Date and time of data generation | 06:00, 1 April 2024 |
Software used | Adobe Photoshop 25.3 (Windows) |
File change date and time | 12:35, 25 March 2024 |
Date and time of digitizing | 11:30, 26 December 2023 |
Date metadata was last modified | 13:35, 25 March 2024 |
Unique ID of original document | xmp.did:a845c5fd-1ac6-6b40-82a5-88e8d15e9ea0 |
Keywords | Arp 72 |
Contact information |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM version | 4 |