- Original Caption Released with Image:
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NGC 6621/2 (VV 247, Arp 81) is a strongly interacting pair of galaxies,
seen about 100 million years after their closest approach. It consists of
NGC 6621 (to the left) and NGC 6622 (to the right). NGC 6621 is the larger
of the two, and is a very disturbed spiral galaxy. The encounter has
pulled a long tail out of NGC 6621 that has now wrapped behind its body.
The collision has also triggered extensive star formation between the two
galaxies. Scientists believe that Arp 81 has a richer collection of young
massive star clusters than the notable Antennae galaxies (which are much
closer than Arp 81). The pair is located in the constellation of Draco,
approximately 300 million light-years away from Earth. Arp 81 is the 81st
galaxy in Arp's Atlas of Peculiar Galaxies.
This image is part of a large collection of 59 images of merging galaxies
taken by the Hubble Space Telescope and released on the occasion of its
18th anniversary on 24th April 2008. It was taken by the telescope's Wide
Field and Planetary Camera 2, which was designed and built by JPL.
- Image Credit:
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NASA, ESA, the Hubble Heritage Team (STScI/AURA)-ESA/Hubble and W. Keel (University of Alabama, Tuscaloosa)
Image Addition Date:
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2008-04-24
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