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sputnik 1 was the first satellite put in to space. it was lunched by the USSR. https://www.britannica.com/science/space-exploration/History-of-space-exploration -
on 4/12/1961 soviet cosmonaut Yury Gagarin, was the first person in space. he orbited the earth in the Vostok 1 space ship. https://explore.proquest.com/sirsdiscoverer/document/2326413030?searchid=1760638237&accountid=3541 -
John Glenn was the first American to obit the earth. helped America to kick start them selves in the space race. https://www.britannica.com/story/timeline-of-the-space-race -
the apollo 11 space craft landed on the moon on July 20, 1969. Neal Armstrong was the first person to walk on the moon. https://www.britannica.com/list/5-unforgettable-moments-in-the-history-of-spaceflight-and-space-exploration -
the Hubble Space Telescope was the most sophisticated telescope to orbit the earth. It was a reflective telescope and it revolutions astronomy. https://www.britannica.com/list/5-unforgettable-moments-in-the-history-of-spaceflight-and-space-exploration