Commemorations occur today in honor of 1st ever NASA Space Shuttle Columbia carrying John Young and pilot Robert Crippen around Earth on 54.5-hour mission in 1981.
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1 event,Recognized proclamation to celebrate the first-ever imaged black hole M87* by Event Horizon Telescope collaboration involving Mauna Kea Observatories, given the Hawaiian name Pōwehi; imaged in April 2017 and released Apr 10, 2019. |
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1 event,Celebrating Yuri Gagarin, the 1st human to orbit Earth on Vostok 1 spacecraft in 1961; the flight lasted 108 minutes at 27,400 kph and 327 km above Earth. |
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1 event,Space telescope for NASA Explorers program reaches 8th full year in space today, designed to search for exoplanets using the transit method in an area 400 times larger than that covered by Kepler / K2 mission; launched April 18, 2018. |
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2 events,NASA spacecraft with 2.4-meter diameter main telescope begins 37th year in space today, launched Apr 24, 1990; could continue operations until 2040s. Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970. |
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