I Zwicky 18 is a blue compact dwarf and Wolf–Rayet galaxy located about 18.44 megaparsecs (60.14 million light-years) away in the constellation Ursa Major. The galaxy was first identified by Swiss astronomer Fritz Zwicky in a 1930s photographic survey of galaxies.
I Zwicky 18 is a blue compact dwarf and Wolf–Rayet galaxy located about 18.44 megaparsecs (60.14 million light-years) away in the constellation Ursa Major. The galaxy was first identified by Swiss astronomer Fritz Zwicky in a 1930s photographic survey of galaxies.
Source: Wikipedia "I Zwicky 18" · CC BY-SA 4.0
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