Portal:Spaceflight/On This Day/6 December

• 1957 - The first US satellite launch attempt fails when the Vanguard rocket used explodes on its launch pad.
• 1958 - A Juno II launches the Pioneer 3 probe.
• 1965 - A Scout X-4 launches the FR-1 satellite.
• 1971 - A Voskhod launches the Kosmos 463 satellite.
• 1975 - A Scout F-1 fails to launch two DAD satellites.
• 1980 - An Atlas-Centaur launches the Intelsat 502 satellite.
• 1995 - An Ariane 4 launches the Insat 2C and Telecom 2C satellites.
• 1998 - An Ariane 4 launches the Satmex 5 satellite.
• 1998 - A Pegasus-XL launches the SWAS satellite.
• 2000 - An Atlas IIAS launches the USA-155 satellite.
• 2009 - The first Delta IV-M+(5,4) launches the USA-211 satellite.
• 2013 - An Atlas V launches the USA-247 reconnaissance satellite and 12 cubesats.