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3000 BCE
Stonehenge
The main stones for Stonehenge are placed in position.
http://bit.ly/2zd1OfJ -
585 BCE
Thales predicts a solar eclipse
Thales predicts a solar eclipse
http://bit.ly/2wKGVXV -
467 BCE
Anaxagoras explains a Solar eclipse
Anaxagoras produced a correct explanation for solar eclipses as well as attempting to explain meteors and rainbows
http://bit.ly/2gaAJ8q -
270 BCE
Aristarchus of Samos proposes heliocentrism
Aristarchus of Samos proposes heliocentrism, very few people took his work seriously.
http://bit.ly/2ydp5jB -
164 BCE
Halley's comet
Halley’s Comet is sighted by Babylonian astronomers
http://bit.ly/2yW3TMe -
400
Hindu cosmological time line created
The Hindu cosmological time cycles find the average year to be only about 1.4 seconds longer than the modern value -
600
Galileo Telescope
Galileo built the first telescope and used it to observe Jupiter
http://bit.ly/2fZARE8 -
830
Arabic Work
The first major Arabic work is released, Zij al-Sindh by al-Khwarizimi
http://bit.ly/2kDl2Iq -
928
Astrolabe
The earliest surviving astrolabe is constructed, this allowed very accurate measurements of the stars and planets
http://bit.ly/2kF554w -
1543
Copernicus publishes his heliocentric theory of the Universe.
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New Evidence of water found on Mars