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On This Day in Science History
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Science History Posters
Computing
CERN releases World Wide Web source code into the public domain
April 30, 1993
Space Exploration
Launch of the Hubble Space Telescope
April 24, 1990
Other
The First Video is Uploaded to YouTube
April 23, 2005
Space Exploration
Launch of Salyut 1, the world's first space station
April 19, 1971
Space Exploration
MOXIE generates the first breathable oxygen on Mars
April 21, 2021
Space Exploration
Apollo 16 lands on the Moon
April 20, 1972
Space Exploration
Launch of NASA’s TESS Exoplanet Hunter
April 18, 2018
Space Exploration
Apollo 13 returns safely to Earth
April 17, 1970
Physics
First Concorde 002 Maiden Flight
April 9, 1969
Computing
Microsoft Founded
April 4, 1975