Back 1978 йылда йыһанға осороуҙар исемлеге Bashkir 1978 en els vols espacials Catalan Luettelo vuoden 1978 miehittämättömistä avaruuslennoista Finnish 1978 en astronautique French 1978 באסטרונאוטיקה HE 1978 йисуз космосдиз ахъаюнрин сиягь LEZ Список космических запусков в 1978 году Russian
 | This timeline of spaceflight may require cleanup to ensure consistency with other timeline of spaceflight articles. See Wikipedia:WikiProject Spaceflight/Timeline of spaceflight working group for guidelines on how to improve the article. Details Concerns have been raised that:
|  |
 The Pioneer Venus Orbiter atop an Atlas-Centaur before launch | |
| Orbital launches | |
|---|---|
| First | 6 January |
| Last | 28 December |
| Total | 128 |
| Catalogued | 124 |
| National firsts | |
| Space traveller |  Czechoslovakia Poland East Germany DDR |
| Rockets | |
| Retirements | Atlas-Agena Mu-3H |
| Crewed flights | |
| Orbital | 5 |
| Total travellers | 10 |
1978 saw the launch of the Pioneer Venus missions launched by the United States, on 20 May and 8 August. The Pioneer Venus Multiprobe landed four spacecraft on the planet, one of which transmitted data for 67 minutes before being destroyed by atmospheric pressure. ISEE-C, which was launched on 8 December, flew past comet 21P/Giacobini–Zinner in 1985, and Halley's Comet in 1986.[1]
- ^ Hughes, J (1996) Larousse Desk Reference Encloypedia London RD Press