Template:Selected anniversaries/August 21: Difference between revisions

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File:Harry Daghlian.gif|link=Harry Daghlian (nonfiction)|1945: Physicist [[Harry Daghlian (nonfiction)|Harry Daghlian]] is fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory.
File:Harry Daghlian.gif|link=Harry Daghlian (nonfiction)|1945: Physicist [[Harry Daghlian (nonfiction)|Harry Daghlian]] is fatally irradiated in a criticality accident during an experiment with the Demon core at Los Alamos National Laboratory.
File:The Custodian.jpg|link=The Custodian|1945: [[The Custodian]] prevents [[Baron Zersetzung]] from stealing the Demon core at Los Alamos National Laboratory.


||1957 – The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile.
||1957 – The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile.

Revision as of 18:33, 3 July 2017