Colliding galaxies. Composite Hubble Space Telescope (HST) image of the star-forming spiral galaxy NGC 2936 (upper right) colliding with a second galaxy NGC 2937 (lower left). Once a normal flat spiral-disk galaxy,NGC 2936's appearance and the orbits of its stars have become scrambled due to gravitational tidal interactions with NGC 2937. The interactions have warped and distorted NGC 2936's spiral shape and interstellar gas has been strewn out into giant tails. Collectively,these two galaxies are called Arp 142. Arp 142 lies 326 million light-years from Earth in the constellation Hydra. Imaged by the Wide Field Camera of the Hubble Space Telescope | |
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Credit: | Science Photo Library / NASA |
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