On June 16, 1963, Russian cosmonaut Valentina Tereshkova became the first woman in space when she was launched on Vostok 6 from Baikonur Cosmodrome. During her mission, which lasted just under three days, she maintained a flight log and performed various tests to collect data on her body’s reaction to spaceflight. Her photographs of Earth and the horizon were later used to identify aerosol layers within the atmosphere.


Mona Evans
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