KnowraArp 220Linked fromLinked fromThe 4 pages that link to Arp 220, each with the reason it gives.All 4Broader topic 3Compared with 1Starburst galaxyBroader topic: Its obscured, merger-powered burst is among the closest examples of an extreme starburst.MegamaserBroader topic: Its intense hydroxyl megamaser emission links luminous radio lines to a merger-driven starburst.Starburst regionBroader topic: Its obscured nuclei illustrate merger-driven, extreme star formation.