Portal:Spaceflight/On This Day/23 September

• 1958 - A Luna fails to launch a Luna probe.
• 1963 - A Thor-Agena launches a CORONA satellite.
• 1964 - An Atlas-Agena launches an AFP-206 satellite.
• 1965 - A Voskhod launches the Kosmos 91 satellite.
• 1968 - A Voskhod launches the Kosmos 243 satellite.
• 1969 - A Proton-K fails to launch the Kosmos 300 spacecraft.
• 1972 - A Delta 1604 launches the Explorer 47 spacecraft.
• 1975 - A Voskhod launches the Kosmos 769 satellite.
• 1977 - A Titan 24B launches a KH-8 satellite.
• 1980 - A Soyuz-U launches the Kosmos 1211 satellite.
• 1981 - A Kosmos-3M launches the Kosmos 1310 satellite.
• 1987 - A Soyuz-U2 launches the Progress 32 spacecraft to resupply Mir.
• 1997 - A Kosmos-3M launches the Kosmos 2346 and FAISAT satellites.
• 1997 - An Ariane 4 launches the Intelsat 803 satellite.
• 1998 - A Pegasus-XL launches eight Orbcomm satellites.
• 1999 - An Atlas IIAS launches the Echostar 5 satellite.
• 1999 - Due to a navigation error caused by confusion between metric and imperial units, the Mars Climate Orbiter burns up in the atmosphere of Mars.
• 2004 - A Kosmos-3M launches two satellites.
• 2005 - A Minotaur I launches the USA-185 satellite.
• 2009 - A PSLV launches the OceanSat-2, BeeSat, UWE-2, ITU-pSat1, SwissCube-1, Rubin 9.1 and Rubin 9.2 spacecraft.
• 2011 - An H-IIA launches a satellite for the Japanese IGS reconnaissance system.
• 2013 - A Long March 4C launches the FY-3C weather satellite.