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Look through the cosmic cloud cataloged as NGC 281 and it's almost easy to miss stars of open cluster
IC 1590. But, formed within the nebula, that cluster's young, massive stars ultimately power the
pervasive nebular glow. The eye-catching shapes looming in this portrait of NGC 281 are sculpted
columns and dense dust globules seen in silhouette, eroded by intense, energetic winds and radiation
from the hot cluster stars. If they survive long enough, the dusty structures could also be sites
of future star formation. Playfully called the Pacman Nebula because of its overall shape,
NGC 281 is about 10,000 light-years away in the constellation Cassiopeia. This composite image was
made through narrow-band and broad-band filters combining emission from the nebula's hydrogen in a visible spectrum palette.
It spans over 80 light-years at the estimated distance of NGC 281. [Text from APOD]
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