Portal:Spaceflight/On This Day/22 April


 * 1963 - A Vostok-2 rocket launches the Kosmos 15 satellite.
 * 1966 - A Scout B launches the OV3-1 satellite.
 * 1968 - A Proton-K fails to launch an unknown satellite.
 * 1971 - A Titan 23B launches a KH-8 satellite.
 * 1971 - A Soyuz rocket launches the manned Soyuz 10 mission.
 * 1975 - A Kosmos-3M launches the Kosmos 729 satellite.
 * 1976 - A Delta 2914 launches the NATO 3A satellite.
 * 1983 - A Soyuz-U launches the Kosmos 1454 satellite.
 * 1984 - A Proton-K launches a Gorizont satellite.
 * 1987 - A Soyuz-U launches the Kosmos 1837 satellite.
 * 2009 - A Long March 2C launches the Yaogan-6 satellite.
 * 2010 - An Atlas V launches the first flight of the Boeing X-37 unmanned spaceplane.
 * 2011 - An Ariane 5 ECA launches the Yahsat 1A and Intelsat New Dawn satellites.