c. 280 BC
Aristarchus of Samos first began to propose hius theories on how the Earth moves
Ptolemy published a book about how the Heavens work
Nocolaus Copernicus published a book about how the Earth moves.
Giordano Bruno was declared a heretic and burned at the stake for supporting Copernicus’s theory.
Johannes Kepler discovered the laws guiding the movement of the planets.
Galileo Galilei discovered four large moon around Jupiter.
Isaac Newton proposed the law of gravitation.
Charles Augustin de Coulomb discovered electricial force proportional to product of charges and inverse square of distance.
Christian Doppler discovered the Doppler Effect.
Rudolf Clansius devised generalized second law of thermodynamics.
Max Planck devised a way to calculate electromagnetic waves.
Michelson-Morley experiment carried out.
Max Planck devised the Planck constant for quantum mechanics.
Albert Einstein announces his special theory of relativity and light quanta.
Niels Bohr discovers the structure of atoms applies to quantum theory.
Einstein announced his general theory of relativity.
Theodor Kaluza announced the Kline model.
Werner Heisenberg proposed the matrix dynamics.
Erwin Schrodinger devised wave mechanics.
Edwin Hubble discovered the Universe is expanding.
Subrahmanyan Chandrasekhar, formulated maximum mass theoretically possible for a stable white dwarf.
Paul Dirac predicted the existence of monopoles, proposed quantum electromagnetic.
George Gamow calculated the element synthesis of the Big Bang.
Jan Mills devised the gauge theory based on quantum mechanics.
Allan Sandage and others discovered a quasar.
Murray Gell-Mann and George Zweig discovered the quark model.
Peter Higgs and other discovered 3-K radiation.
Roger Penrose and Stephen Hawking announced their black hole singular theory; Anthony Hewish and Jocelyn Bell discovered a pulsar.
Stephen Weinberg and Abdus Salam announced their theory of unified weak electromagnetic power.
Sheldon Glashow announced the grand unified theory.
Hawking announced his theory that black holes give off radiation.
Alan Guth proposed inflation theory.
Edward Schwartz and Michael Green proposed the Superstring theory.
Witten and Townsend introduce M-theory revolution in superstring theory.