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Semeis 147: Supernova Remnant

Simeis 147 is a faint supernova remnant in Taurus, covering nearly three degrees of the sky. This corresponds to a width of 150 light-years at its estimated distance of 3,000 light-years. The image reveals intricate filaments within this stellar debris cloud. Astronomer Steve Mandel accumulated over eight hours of exposure time to create this detailed view.