Portal:Spaceflight/On This Day/11 December

• 1961 - A Vostok-K fails to launch an unknown satellite.
• 1964 - An Atlas-Centaur launches a Boilerplate Surveyor spacecraft.
• 1966 - An Atlas D launches the OV1-9 and 10 satellite.
• 1969 - A Kosmos-2I launches the Kosmos 314 satellite.
• 1970 - A Delta N launches the NOAA-1 satellite.
• 1971 - A Scout B-1 launches the Ariel 4 satellite.
• 1972 - A Delta 0900 launches the Nimbus 5 satellite.
• 1975 - A Kosmos-3M launches the Interkosmos-14 satellite.
• 1977 - An Atlas-Agena launches the OPS-4258 satellite.
• 1978 - An Atlas E/F launches the GPS-4 satellite.
• 1985 - A Soyuz-U launches the Kosmos 1706 satellite.
• 1988 - An Ariane 4 launches the Skynet 4B and Astra 1A satellites.
• 1989 - A Delta II launches the GPS II-5 satellite.
• 1996 - A Tsyklon-2 launches the Kosmos 2335 satellite.
• 1998 - A Delta II launches the Mars Climate Orbiter.
• 1999 - A VLS-1 fails to launch the SACI-2 satellite.
• 2002 - An Ariane 5 fails to launch the Hot Bird 7 and Stentor satellite.
• 2006 - A Proton-M launches the Measat 3 satellite.
• 2011 - A Proton-M launches the Luch-5A and Amos-5 satellites.
• 2012 - An Atlas V launches USA-240, the second flight of the first Boeing X-37B.