APOD: 2026 September 24 – The Ghosts of Five Supernovas

APOD Science APOD APOD: 2026 September 24 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a differ

原文标题：APOD: 2026 September 24 – The Ghosts of Five Supernovas

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APOD Science APOD APOD: 2026 September 24 –… 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 featu

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