Changes

[[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>[[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]] – The Soviet probe 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>