Search examples: Microsoft | 2015 | 2014/10 | 4.12 | 04/20 | 05/26/1980 | Galileo Galilei

Science on the 21st of July in history

Science

Date	Type	Text
21 Jul 1586 Thomas Cavendish	science	Thomas Cavendish (exploration) Thomas Cavendish sets out from Plymouth in the Desire on the first deliberately planned circumnavigation.	0
21 Jul 1595 Spanish	science	Spanish (exploration) A Spanish expedition led by Álvaro de Mendaña de Neira makes the first European landing in Polynesia, on the Marquesas Islands.	0
21 Jul 1618 Pluto	science	Pluto (astronomy) Pluto (not known at this time) reaches an aphelion. It also came to aphelion in 1866.	0
21 Jul 1620 Jean Picard	science	birth Jean Picard Jean Picard, French astronomer (died 1682)	0
21 Jul 1810 Henri Victor Regnault	science	birth Henri Victor Regnault Henri Victor Regnault (died 1878), physical chemist.	0
21 Jul 1882 Herbert E. Ives	science	birth Herbert E. Ives Herbert E. Ives (died 1953), American optical engineer.	0
21 Jul 1903 Henri Alexis Brialmont	science	death Henri Alexis Brialmont Henri Alexis Brialmont (born 1821), military engineer.	0
21 Jul 1919 Gustaf Retzius	science	death Gustaf Retzius Gustaf Retzius (born 1842), anatomist.	0
21 Jul 1925 Scopes Trial	science	Scopes Trial (biology) Scopes Trial: In Dayton, Tennessee, high school biology teacher John T. Scopes is found guilty of teaching evolution in class and fined $100.	0
21 Jul 1926 Washington Roebling	science	death Washington Roebling Washington Roebling (born 1837), civil engineer.	0
21 Jul 1943 Mesozoic	science	Mesozoic (biology) Living specimens of Metasequoia glyptostroboides, the Dawn Redwood, previously known only as a Mesozoic fossil, are located in China.	0
21 Jul 1955 J. B. Christopherson	science	death J. B. Christopherson J. B. Christopherson (born 1868), English physician.	0
21 Jul 1984 Jackson	science	Jackson (technology) In Jackson, Michigan, a factory robot crushes a worker against a safety bar in apparently the first robot-related death in the United States.	0
21 Jul 1986 Zhang Yuzhe	science	death Zhang Yuzhe Zhang Yuzhe (b. 1902), Chinese astronomer.	0
21 Jul 1994 Sagittarius Dwarf Elliptical Galaxy	science	Sagittarius Dwarf Elliptical Galaxy (astronomy and space ) R. Ibata, M. Irwin, and G. Gilmore discover the Sagittarius Dwarf Elliptical Galaxy, a satellite galaxy of the Milky Way, considered the closest galaxy to the Milky Way until 2003.	0
21 Jul 1998 Alan Shepard	science	death Alan Shepard Alan Shepard (b. 1923), astronaut.	0

20th July 22nd July

Like us on

Onthisday

Follow us on

Tweets av @OnThisDayNet

Link to results

What happened on this day in history?

OnThisDay.net is your complete guide to find out what happened on this day in History. The front page on this site shows you a series of important happenings and you can browse them buy categories such as births, deaths, events, science, history, music, news and holidays. We have also added an anniversary tab displaying happenings deserving extra attention today. If you are missing an important happening we made it easy for you to add it to the list. Just click add event, fill out the form and your suggestion will be revised by one of our staff. Please feel free to vote on your favourite events. This will help us in our effort to display the most popular events first and make the site more interesting for the next visitor, as events with many votes eventually will be shown first.