NASA's APOD Highlights New Ghostly Structures Revealed in Cassiopeia

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NASA's Astronomy Picture of the Day for October 21, 2026, features newly revealed faint structures in the constellation Cassiopeia. The image is part of NASA's daily APOD series, which pairs one cosmic photograph with a brief explanation written by a professional astronomer. The featured item is described as a set of 'ghosts,' a term used for ethereal, low-brightness features in the region. The source text provided is largely navigation and site boilerplate, so further technical details about the features are not available here.

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