Today is Thursday, April 1, the 91st day of 2010. There are 274 days left in the year.
374 _ Halley's Comet approaches within 0.0884 astronomical units (AUs) of Earth
527 _ Justinianus becomes compassionate emperor of Byzantium
1578 _ William Harvey of England discovers blood circulation
1924 _ Hitler sentenced to five years labor but General Ludendorff acquitted
1939 _ U.S. recognizes Franco government in Spain at end of Spanish civil war Pope Pius XII congratulates Generalissimo Franco's victory in Spain
1952 _ Big Bang theory proposed in Physical Review by Alpher, Bethe and Gamow
1979 _ Iran proclaimed an Islamic Republic following fall of Shah
1991 _ U.S. minimum wage goes from $3.80 to $4.25 per hour
1991 _ Warsaw Pact officially dissolves
1992 _ World's seven wealthiest nations agree on $24 billion aid for former USSR