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Hydrogen
1979 1st recorded occurrance-comet hits sun (energy=1 mil hydrogen bombs)

1967 1st Chinese hydrogen bomb explodes

1961 Soviet Union tests a 58 megaton hydrogen bomb

1956 U.S. explodes 1st airborne hydrogen bomb over Bikini Atoll

1954 U.S. explodes 15 megaton hydrogen bomb at Bikini Atoll

1953 U.S.S.R. explodes its 1st hydrogen bomb

1953 Russia publicly acknowledges hydrogen bomb test detonation

1953 Soviet Union conducts secret test of its 1st hydrogen bomb

1953 Russia's Georgi Malenkov reports possession of hydrogen bomb

1953 President Truman announces development of hydrogen bomb

1952 1st hydrogen device exploded at Eniwetok Atoll in Pacific

1950 Albert Einstein warns against hydrogen bomb

1950 President Truman approves building of hydrogen bomb

1838 Pierre Jules Cesar Janssen, discoverer of hydrogen in Sun

1783 Charles and M N Roberts ascend 2,000' in hydrogen balloon

1783 1st hydrogen balloon flight (unmanned); reaches 900 m altitude

1731 Henry Cavendish, England, physicist/chemist, discovered hydrogen



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