Mobile Suit Gundam SEED C.E. 73 Δ Astray (pronounced "Delta Astray") (機動戦士ガンダムSEED C.E.73デルタASTRAY) is a collection of gaiden (side stories) set in the Cosmic Era of Mobile Suit Gundam SEED Destiny, and is a follow-up to Mobile Suit Gundam SEED Destiny Astray. It also ties-in with the Original Net Animation side story Mobile Suit Gundam SEED C.E. 73: STARGAZER.