| A | B |
|---|
| Apollo 11 | First manned landing on the moon - 20 July 1969 |
| Apollo 13 | Failed mission to the moon - 1970 |
| Apollo 1 | Astronauts died in capsule fire on launch pad - 1967 |
| Sputnik 1 | First artificial satellite - 1957 |
| Voskhod 2 | First spacewalk - Alexey Leonov - 1965 |
| Vostok 1 | First human, Yuri Gagarin, in space - 1961 |
| Vostok 6 | First woman, Valentina Tereshkova, in space - 1963 |
| STS-51-L | Challenger space shuttle disaster - 1986 |
| STS-107 | Columbia space shuttle disaster - 2003 |
| Apollo-Soyuz Test Project | US & USSR spacecraft docked in low earth orbit - 1975 |
| SpaceX CRS-1 | First commercial mission - resupply the ISS - 2012 |
| SM1, SM2, SM3A, SM3B, SM4 | Hubble Space Telescope servicing missions using spacewalks |
