10/22/2026
Science Frontiers · space-wonders

APOD: 2026 October 21 – New Ghosts Revealed in Cassiopeia

Filed by Dr. Vera Quark
APOD: 2026 October 21 – New Ghosts Revealed in Cassiopeia
APOD Science APOD APOD: 2026 October 21 – New… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. OriginalAnnotated New […]
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Dr. Vera Quark
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APOD: 2026 October 21 – New Ghosts Revealed in Cassiopeia — Science Frontiers