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First Reflective Telescope
The first reflective telescope is created by Issac Newton -
Philosophiae Naturalis Principia Mathematica is published
Issac Newton publishes his theory of universal gravity in Philosophiae Naturalis Principia Mathematica. -
Halley's Comet First Predicted
Halley correctly predicts the return of a comet (Halley's comet) in 1758. -
First Asteroid discovered
First asteroid "Ceres" discovered by Piazzi -
General Relitivity
Albert Einstein introduces his general Theory of Relativity. -
Konstantin Tsiolkovskii was born.
Rocket pioneer Konstantin Tsiolkovskii was born. "Father of Astronautics". Many of his proposals concerning rocketry were later put into use including: use of liquid hydrogen and liquid oxygen as rocket fuel and multi-stage rocket design -
Spectral analysis of stars begins
The beginning of spectral analysis of stars by Sir William Huggins. -
Theory of Relativity
Albert Einstein introduces the Theory of Relativity in paper Electrodynamics of Moving Bodies. -
Hubble shows galaxies
Hubble shows that galaxies exist outside the Milky Way -
Sputnik Launched
Sputnik becomes the first object to orbit the Earth it was launched by the Russians.