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April 1, 2024
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Created by
hanna
⟶ Updated 30 Jan 2018 ⟶
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Events
The megalithic structures of Carnac were built.
Pentre Ifan is built
Building of Newgrange tomb
Stonhenge put in place
First solar/ lunar calendars
Stones of Fassa put in place by the Vestini tribe
Aristarchus suggests Heliocentric solar system
Eratosthenes measures the circumference of the earth (very accurate)
Hipparchus develops the first acccurate star map and star catalogue
Introduction of Julien calendar (solar)
Ptolemy suggests geocentric theory of the universe
Chinese astronomers observe supernova in Taurus
Copernicus publishes his heliocentric theory of the Universe.
Tycho Brahe discovers a supernova in constellation of Cassiopeia
Pope Gregory XIII introduces the Gregorian calendar
Johann Bayer introduces Bayer designation of stars, assigning Greek letters to stars
Hans Lippershey, a Dutch spectacles maker invents the telescope.
Galileo uses telescope for astronomical purposes and discovers 4 Jovian moons, the Moon's craters and the Milky Way galaxy.
Kepler's First and Second Laws of Planetary Motions are announced.
Christian Huygens discovers Saturn's rings and Titan, the fourth satellite of Saturn.
Martian polar ice caps are noted by Cassini.
The first reflecting telescope was built by Newton.
Danish astronomer Ole Romer measures the speed of light.
The discovery of Uranus by Herschel
Clyde Tombaugh discovers Pluto.
Sputnik, first object to orbit the Earth, launched by the Russians.
Comet Shoemaker Levy crashes into Jupiter.
Periods
Ancient Astronomy