Portal:Spaceflight/On This Day/15 December

• 1960 - An Atlas-Able fails to launch the Pioneer P-31 spacecraft.
• 1964 - A Scout X-4 launches the San Marco 1 satellite.
• 1965 - A Titan II launches the manned Gemini 6A mission to conduct the first rendezvous between two manned spacecraft in orbit, with Gemini 7.
• 1968 - A Delta N launches the ESSA-8 satellite.
• 1970 - A Voskhod launches the Kosmos 386 satellite.
• 1971 - A Kosmos-3M launches the Kosmos 465 satellite.
• 1976 - A Proton-K launches two TKS spacecraft.
• 1976 - A Kosmos-3M launches the Kosmos 883 satellite.
• 1977 - A Delta 2914 launches the Sakura satellite.
• 1978 - A Kosmos-3M launches the Kosmos 1062 satellite.
• 1981 - An Atlas-Centaur launches the Intelsat 503 satellite.
• 1983 - A Tsyklon-3 launches the Kosmos 1515 satellite.
• 1984 - A Proton launches the Vega-1 satellite.
• 1987 - A Kosmos-3M launches the Kosmos 1902 satellite.
• 1989 - A Proton-K launches a Raduga satellite.
• 1995 - An Atlas IIA launches the Galaxy 3R satellite.
• 1997 - A Soyuz-U launches the Kosmos 2348 satellite.
• 2008 - A Long March 4B launches the Yaogan 5 satellite.
• 2009 - A Long March 4C launches the Yaogan 8 and Xi Wang 1 satellites.
• 2010 - A Soyuz-FG launches Soyuz TMA-20, carrying three of the Expedition 26 crew to the ISS.