Before revision: Humans reached outer space mediated in 1944 (MW 18014) and have sustained mediated presence since 1958 (Vanguard 1), as well as having reached space directly for the first time on 12.
After revision: Humans reached outer space mediated in 1944 (MW 18014) and have sustained mediated presence since 1958 (Vanguard 1), as well as having reached space directly for the first time on