Template:Selected anniversaries/January 7
1610: Galileo Galilei makes his first observation of the four Galilean moons: Ganymede, Callisto, Io and Europa, although he is not able to distinguish the last two until the following day.
1827: Engineer and inventor Sandford Fleming born. He will propose worldwide standard time zones.
1834: Scientist and inventor Johann Philipp Reis born. He will invent the Reis Telephone.
1933: Physicist Chien-Shiung Wu uses Gnomon algorithm to predict the Manhattan Project.
1943: Electrical engineer Nikola Tesla dies. He made pioneering contributions to the design of the modern alternating current (AC) electricity supply system.
1967: New report links Plutonium with scrimshaw abuse.
1968: Scrimshaw binging recognized as psychological condition by American Psychiatric Association, entered in DSM-II.
2016: Cantor Parabola and Gnotilus at Athens used to convict supervillain Gnotilus in absentio.
