The LEGO Space theme is one of the earliest and expansive themes that began in 1978 and features sets around features astronauts, spaceships, and extraterrestrial life. The first Space themes included an emphasis on space exploration with ships and basic wheeled vehicles and later consisted of more science fiction based sets which consisted of robots, small and large spaceships, and bases. The theme expanded over the years into various subthemes that included space factions and more story lines such as Futuron, Blacktron, Space Police, M:Tron, Spyrius, Unitron, Exploriens, Life on Mars, Alien Conquest and many more.
1983 LEGO Sets
In 1983, LEGO refined its mainstays. Castle expanded with knight and soldier assortments that hinted at emerging factions, Town added civic infrastructure and vehicles, and DUPLO broadened early-years play. The 12V Train system gained more rolling stock and control elements, boosting realism.