The first crewed space launch & the first orbital launch. It carried the Soviet cosmonaut Yuri Gagarin who completed 1 orbit before safely re-entering the atmosphere, he ejected from his capsule at an altitude of 7 km in order to parachute safely to the ground. The mission lasted 108 minutes.
Low Earth OrbitMercury-Redstone BD was an uncrewed booster development flight in the U.S. Mercury program. It was launched on March 24, 1961 from Launch Complex 5 at Cape Canaveral, Florida. The mission used a boilerplate Mercury spacecraft and Redstone MRLV-5.
Suborbital