* Astronomy

At 4:20 in the afternoon of July 6, 1924, people were gathering for a funeral service in front of a church near the town of Elwell, two miles west of Johnstown, Colorado.  Out of nowhere, a sudden sound, likened to that of an airplane engine, filled the quiet day and interrupted the service. A trail of smoke was emblazoned across the blue sky followed by a series of loud explosions.  
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