1773
May 27
| 1773 • French astronomer Charles Messier discovers the Whirlpool Galaxy, an interacting, grand design spiral galaxy located at a distance of approximately 23 million light-years in the constellation Canes Venatici. |
1762
Jan 1
| 1762 • Louis XV orders the construction of the Petit Trianon, in the park of the Palace of Versailles, for his mistress Madame de Pompadour. |
1820
Age: 46y
| 1820 • Alexander Ypsilantis is declared leader of Filiki Eteria, a secret organization to overthrow Ottoman rule over Greece. |
1850
Jun 3
Age: 77y
| 1850 • The temperance organisation, International Organisation of Good Templars, is established in Utica, New York, as the order of the Knights of Jericho. |