Michael Jackson’s “Thriller” hit number one on the Billboard 200 and stayed there for 37 weeks.
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In Svalbard, Norway, the Global Seed Vault celebrated its 10th anniversary by adding its one-millionth seed.
Valentinian I, also known as Valentinian the Great, ascended to the throne as the Roman emperor.
The Roman Inquisition ordered Galileo not to teach or defend his theory that Earth and other planets revolve around the sun.
British Prime Minister Winston Churchill went public that Britain had its first atomic bomb and planned to test it in Australia by the end of the year.
The HMHS Britannic, sister to the RMS Titanic, was launched at Harland and Wolff shipyard in Belfast.
