-
Geocentric theory. Dates from this point forward are after Christ. This particular date is approximate.
-
Discovery of procession of equinoxes. Date is an estimation of time sometime before christ existed.
-
First calculation of earth's circumfrence. B.C.E
-
First proposition of heliocentric universe and first calculations of distance of sun and moon. Before Christ existed.
-
Discovers that earth is as phere and universe is infinite. Before Christ existed.
-
Sun centered universe. (Heliocentric)
-
Three laws of planetary motion. Planets run along elliptical paths.
-
Construction of first complete telescope.
-
first approximation of our solar systems dimensions. First to observe saturn's moons.
-
Wave theory of light published.
-
Laws of motion and universal gravitation.
-
General theory of relativity states effects of acceleration and gravity on time in space.
-
Explosion of single particle is believed to cause ever expanding universe. Theory is still being refined to this day.
-
Rock alignment suggests that it could have been specifically constructed to predict lunar and solar eclipses. Before Christ existed.