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[[1952]] – Newspaper "''The New York Times''" reports that a mechanical [[heart]] was used for the first time to maintain the blood circulation of a 41-year-old man during an 80-minute operation on his heart. <br>
[[1955]] – Atomic sub[[particle]] the [[antiproton]] is discovered. The hunt for [[antimatter]] had begun in [[1932]], after the discovery of the [[Particles#Positron|positron]]. Antiprotons require almost 2,000x the amount of energy to create. <br>
[[1962]] – Drs. Watson, Crick and Wilkins win the Nobel Prize for Medicine and Physiology for their work in determining the double-helix molecular structure of [[DNA]]. <br>
[[1963]] – "Félicette," a black and white female Parisian stray cat, becomes the first cat launched into space. <br>
[[1967]] – [[Probe ]] ''Venera 4'' reaches [[Venus]], and becomes the first spacecraft to measure the atmosphere of another [[planet]]. <br>
[[2019]] – [[NASA]] Astronauts Jessica Meir and Christina Koch take part in the first all-female spacewalk on board the International Space Station. <br>
<noinclude>[[Category:On This Day|292]]</noinclude>
[[category:timeline]]
