The May 29 statement by Roscosmos on the May 16 Proton rocket failure confirmed initial suspicions of a third-stage engine issue but otherwise left many questions unanswered about the failure's origin.
The May 29 statement by Roscosmos on the May 16 Proton rocket failure confirmed initial suspicions of a third-stage engine issue but otherwise left many questions unanswered about the failure's origin.