The
Eskimo Nebula (
NGC 2392), also known as the
Clownface Nebula or
Caldwell 39, is a
bipolar double-shell
planetary nebula (PN). It was discovered by
astronomer William Herschel in
1787. The formation resembles a person's head surrounded by a
parka hood. It is surrounded by gas that composed the outer layers of a
Sun-like star. The visible inner filaments are ejected by strong wind of particles from the central star. The outer disk contains unusual light-year long orange filaments.
NGC 2392 lies more than 2,870 light-years away and is visible with a small
telescope in the constellation of
Gemini.
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