Lunar impact: A history of Project Ranger (PDF) 1977 The Ranger 9 Flight Path And Its Determination From Tracking Data (PDF) 1968 Millions watch space probe crash into Moon (BBC News) Photographs from Ranger 9 Live video from Ranger 9 NASA
レインジャー計画 太陽系探査の年表 月にある人工物の一覧 Lunar impact: A history of Project Ranger (PDF) 1977 The Ranger 9 Flight Path And Its Determination From Tracking Data (PDF) 1968 Millions watch space probe crash into Moon (BBC News) Photographs from Ranger 9