NASA / ESA / HUBBLE / STSCI / SCIENCE PHOTO LIBRARY NASA / ESA / HUBBLE / STSCI / SCIENCE PHOTO LIBRARY
Colliding galaxies Arp 256, Hubble Space Telescope (HST) image. Arp 256 is a system of two spiral galaxies in an early stage of merging. The galaxies contain blue knots of star formation, triggered by the close interaction between the two galaxies. Arp 256 is 350 million light years away in the constellation of Cetus. This image was taken by the HST's Advanced Camera for Surveys (ACS) and its Wide Field Camera 3 (WFC3). Image published in 2018.
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