Tags: Year In Spaceflight.
Template:Wikipedia:WikiProject Timeline of spaceflight/Cleanup1978 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 1P/Halley in 1985.