Alexey Leonov
19342019
Soviet pilot and cosmonaut who became the first human to conduct a spacewalk on March 18, 1965, during the Voskhod 2 mission
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ফিল্টার প্রয়োগ করে জীবনে সব দেখুন19342024
Swedish biochemist who shared the 1982 Nobel Prize for Physiology or Medicine for discoveries concerning prostaglandins and related substances
