The LEGO Classic Space was introduced in 1978 and was the first space theme. It features sets with peaceful space explorers with no enemies unlike other LEGO space sets. There were 5 astronaut minifigures the wore the same suites but in various colors including blue, red, white, yellow and black.
1987 LEGO Sets
1987 reshaped core worlds: Futuron and Blacktron established a new Space rivalry, and the Forestmen arrived in Castle with woodland hideouts and outlaw flair. Early computer-control experiments appeared in the Technic ecosystem, foreshadowing later programmable systems. Across the portfolio, factions and clearer narratives became a defining design focus.