1953 Chemical structure of DNA discovered
Source: https://www.history.com/this-day-in-history/watson-and-crick-discover-chemical-structure-of-dna
Source: https://www.history.com/this-day-in-history/watson-and-crick-discover-chemical-structure-of-dna
Source: https://www.nytimes.com/2015/02/27/arts/television/leonard-nimoy-spock-of-star-trek-dies-at-83.html
Source: https://www.wired.com/2007/02/feb-26-1991-just-browsing/
Source: https://www.nytimes.com/2010/02/26/arts/music/26arts-10BILLIONTHD_BRF.html
Source: https://www.wired.com/2011/02/0224white-sands-rocket-outer-space/
Source: https://time.com/4230820/tootsie-roll-history-origins-name-120th-anniversary/
Source: https://www.olympic.org/news/snapped-the-moment-that-proved-miracles-do-happen
Source: https://www.nasa.gov/image-feature/liftoff-of-john-glenns-friendship-7-feb-20-1962