Portal:Spaceflight/On This Day/5 September

• 1964 - An Atlas-Agena launches the OGO-1 satellite.
• 1968 - A Voskhod launches the Kosmos 239 satellite.
• 1975 - A Soyuz-U launches the Kosmos 758 satellite.
• 1977 - A Titan IIIE launches the Voyager 1 probe to Jupiter and Saturn.
• 1979 - A Soyuz-U launches the Kosmos 1127 satellite.
• 1986 - A Molniya-M launches a Molniya-1 satellite.
• 1986 - A Delta 3920 launches the USA-19 satellite.
• 1988 - A Titan 23G launches the USA-32 satellite.
• 1989 - An H-I launches the GMS-4 satellite.
• 1989 - A Soyuz-U2 launches the manned Soyuz TM-8 mission.
• 1996 - A Kosmos-3M launches the Kosmos 2334 and UNAMSAT satellites.
• 2000 - A Proton-K launches the Sirius-2 satellite.
• 2007 - A Proton-M fails to launch the JCSAT-11 satellite.