In 1961 – Yuri Gagarin of the USSR made a 108-minute orbital flight in the Vostok 1 spacecraft, becoming the first human in space.
In 1981 – Commander John Young and Pilot Robert Crippen crewed the first launch of a Space Shuttle on mission STS-1. During the mission the space shuttle Columbia used an HP-41 calculator to calculate the exact angle at which they needed to re-enter the Earth’s atmosphere.
In 1994 – Immigration Lawyers Laurence Canter and Martha Siegel intentionally posted to more than 6,000 Usenet discussion groups about their green card services. It is considered the first occurrence of commercial spam.