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1452 When Leonardo Da Vinci was thought by historians to have been born. He is later revealed to be the man known as Flint.
1609 Galileo Galilei builds the first astronomical telescope. His observations about the moon, planets in the solar system, the sun, and individual stars in the Milky Way confirms Copernican theories. The sky is no longer the sole domain of mystics.
1666 Sir Isaac Newton postulates laws of universal gravitation – linking celestial and earthly mechanics – and his three laws of motion, and develops calculus to discover and describe his theories.
1799 Henry Spencer of Baltimore, Maryland, builds a sailing ship, a schooner named Enterprise.
1852 The Suliban homeworld becomes uninhabitable.
1877 Giovanni Schiaparelli sees lines on Mars, which he calls canali – Italian for channels or furrows. Canali is translated as canals, suggesting they are not natural phenomena. Humans actively speculate about intelligent life on other worlds.
1893 Lt. Commander Data arrives from the future to investigate the invasion of 19th century San Francisco by life-forms from Devidia II in the 24th Century.
1903 The Wright Brothers build and fly the first motorized airplane in Kitty Hawk, North Carolina, proving that man does not need wings to fly.
1905 Albert Einstein introduces his special theory of relativity and quantum theory, and introduces the idea of space-time. Einstein also predicts that the speed of light is the absolute velocity in the universe and that mass and energy are equivalent and transposable.
1927 Aviator Charles Lindbergh makes the first nonstop solo transatlantic airplane flight and galvanizes world interest in avionics.
October 3, 1936 The U.S.S. Enterprise (CV-6), a United States aircraft carrier which served in World War Two, and that was one of the most successful warships in history, was launched in Newport News, Virginia.
1937 Aviator Amelia Earhart, who captured the world's attention as the first woman to match