An Isolated, Irregular Dwarf

NGC 1156 is located around 25 million light-years from Earth in the constellation Aries. It’s a dwarf irregular galaxy and isolated, meaning no other galaxies are close enough to influence its odd shape or star formation. The extreme energy of young stars ionizes hydrogen gas which glows red, while its centre is filled with older stars.

Video Credits: ESA / NASA / R. B. Tully / R. Jansen / R. Windhorst

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