EntityQ3977681· pop 6· linked from 6 articlesAnticenter shellSign in to savesupershell located outside of the galaxyConnectionsparsecEntityepochEntityThe Astrophysical JournalEntitysuperbubbleEntityMilky WayEntitygalaxyEntitylight-yearEntityOrionEntityGeminiEntitydigital object identifierEntityTimeEntityradio waveEntityastronomerEntityright ascensionEntitydeclinationEntityastronomical coordinate systemEntitybibcodeEntitydwarf galaxyEntitycosmic dustEntityUniversity of MarylandEntityCategoriesPost-stellar nebulaeSuperbubbles