Template:Selected anniversaries/October 5
1607: Assassins sent by Pope Paul V attempt to kill Venetian statesman and scientist Paolo Sarpi, who survives fifteen stiletto thrusts.
1975: Six Seconds to Hell is "a reasonably accurate depiction of events as I experienced them," says art critic and alleged supervillain The Eel.
1976: Viking program: The Viking 2 orbiter primary mission ends at the beginning of solar conjunction. The extended mission will commence on 14 December 1976 after solar conjunction.
1985: Mathematician Karl Menger dies. He worked on mathematics of algebras, algebra of geometries, curve and dimension theory, game theory, and social sciences.
1985: Writer and crime-fighter Isaac Asimov publishes Two Plus Two Opens the Door, an introduction to Gnomon algorithm functions for children, which will influence a generation of mathematicians.
1985: Mathematician and statistician Harald Cramér dies. He helped found probability theory as a branch of mathematics, writing in 1926: "The probability concept should be introduced by a purely mathematical definition, from which its fundamental properties and the classical theorems are deduced by purely mathematical operations."
2017: Dennis Paulson of Mars celebrates the forty-first anniversary of the end of the Viking 2 orbiter's primary mission, at the beginning of the solar conjunction.