Portal:Spaceflight/On This Day/3 September
- 1965 - A Kosmos-1 launches five satellites.
- 1970 - A Thor-Burner launches the DAPP-2525 satellite.
- 1976 - A Soyuz-U launches the Kosmos 854 satellite.
- 1980 - A Soyuz-U launches the Kosmos 1209 satellite.
- 1981 - A Titan IIID launches a KH-11 satellite.
- 1982 - An N-I launches the Kiku 4 satellite.
- 1983 - A Soyuz-U launches the Kosmos 1495 satellite.
- 1986 - A Soyuz-U launches the Kosmos 1775 satellite.
- 1986 - A Kosmos-3M launches the Kosmos 1776 satellite.
- 1987 - A Soyuz-U launches the Kosmos 1874 satellite.
- 1987 - A Proton-K launches an Ekran satellite.
- 1990 - A Long March 4 launches a Feng Yun 1 satellite.
- 1993 - An Atlas I launches the UHF-F2 satellite.
- 1995 - A Soyuz-U2 launches the manned Soyuz TM-22 mission to Mir.