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Arp 299 is about 140 million light years away from Earth and has been merging for millions of years. Josh King has the story (@abridgetoland).https://www.msn.com/en-us/money/videos/nasa-has-captured-what-it-looks-like-when-two-galaxies-collide/vp-BBDlxfM(Video embedded in story. With beautiful photos. Video is under a minute)