1633 - In Rome, the Inquisition arrested the Italian astronomer Galileo Galilei, who later, under threat of death, was forced to give up his teaching on the heliocentric system.
1668 - Spain recognizes Portugal as a separate nation.
1852 - Johan Ludwig Born Emile Dreyer, a prominent Danish-Irish astronomer.
1955 - Israel receives four of the seven sets of letters from the Dead Sea area.
1990 - An agreement on the resumption of Germany has been reached.
2001 - Earth in El Salvador; at least 400 victims.
2004 - The Harvard-Smithsonian Center for Astrophysics announces the discovery of the largest "diamondwhite" dwarf star BPM 37093. It is named "Lucy" after the Beatles song "Lucy in the Sky with Diamonds".
2011 - For the first time since 100 years, the Indian tribe Umatilla is allowed to catch a bison outside the Yellowstone National Park.
