Template:Selected anniversaries/February 17: Difference between revisions

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||1959 – Project Vanguard: Vanguard 2: The first weather satellite is launched to measure cloud-cover distribution.
||1959 – Project Vanguard: Vanguard 2: The first weather satellite is launched to measure cloud-cover distribution.


||File:The Hal Jordan Playbook.jpg|link=The Hal Jordan Playbook|1964: Publication of ''[[The Hal Jordan Playbook]]'' increases risk of [[crimes against mathematical constants]].
||Heinrich Franz Friedrich Tietze (d. February 17, 1964) was an Austrian mathematician, famous for the Tietze extension theorem on functions from topological spaces to the real numbers. He also developed the Tietze transformations for group presentations, and was the first to pose the group isomorphism problem.


||1965 – Project Ranger: The Ranger 8 probe launches on its mission to photograph the Mare Tranquillitatis region of the Moon in preparation for the manned Apollo missions. Mare Tranquillitatis or the "Sea of Tranquility" would become the site chosen for the Apollo 11 lunar landing.
||1965 – Project Ranger: The Ranger 8 probe launches on its mission to photograph the Mare Tranquillitatis region of the Moon in preparation for the manned Apollo missions. Mare Tranquillitatis or the "Sea of Tranquility" would become the site chosen for the Apollo 11 lunar landing.

Revision as of 20:59, 27 November 2017