Portal:Spaceflight/On This Day/3 October
- 1962 - An Atlas LV-3B launches the manned Mercury-Atlas 8 mission.
- 1967 - A Molniya-M launches a Molniya-1 satellite.
- 1968 - A Kosmos-2I launches the Kosmos 245 satellite.
- 1968 - A Scout B launches the ESRO-1A satellite.
- 1970 - A Tsyklon-2 launches the Kosmos 367 satellite.
- 1973 - A Voskhod launches the Kosmos 596 satellite.
- 1978 - A Soyuz-U launches the Kosmos 1033 satellite.
- 1978 - A Soyuz-U launches the Progress 4 spacecraft to resupply Salyut 6.
- 1979 - A Proton-K launches an Ekran satellite.
- 1980 - A Soyuz-U launches the Kosmos 1213 satellite.
- 1985 - A Vostok-2M launches the Kosmos 1689 satellite.
- 1985 - A Molniya-M launches a Molniya-3 satellite.
- 1985 - Space Shuttle Atlantis launches on its maiden flight, STS-51-J - a mission to deploy two DSCS satellites.
- 1986 - A Molniya-M fails to launch the Kosmos 1783 satellite.
- 1988 - A Molniya-M launches the Kosmos 1974 satellite.
- 1989 - A Soyuz-U launches the Kosmos 2047 satellite.
- 1994 - A Soyuz-U2 launches the manned Soyuz TM-20 mission.
- 1998 - A Taurus launches the STEX satellite.