In 1609 – Galileo Galilei craftily beat a Dutch telescope maker to an appointment with the Doge of Venice. Galileo impressed the Doge and received a lifetime appointment and a doubled salary. Later that autumn, Galileo pointed his telescope to the Moon, and trouble began.
In 1981 – Voyager 2 made its closest approach to Saturn. 8 years later on the same day in 1989, Voyager 2 would make its closest approach to Neptune.
In 1991 – 21-year-old Finnish student Linus Torvalds wrote a newsgroup post about an free operating system he was working on. He said it was “just a hobby, won’t be big and professional like gnu.” His OS would eventually be called Linux.