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Jan 5, 600
Construction of Chichen Itza
Chichen Itza, a Mayan proto-observatory was constructed in mid-eastern Mexico at this point. Its' use as a proto-observatory is mostly speculational, as documentary evidence of its existence was not around at that point. -
May 1, 1543
Copernicus invents the heliocentric model
Copernicus created his model on this date -
May 1, 1572
Tycho Brahe observes supernova
Tycho Brahe observed a supernova in this year. -
Kepler's Planetary model created
That's what happened today. -
First telescopic images of Pluto taken
On the 19th of March, 1906, astronomers projected the first known pictures of Pluto ever to be taken -
Yuri Gagarin launched into space
On the 12 of April, 1961, Russian Yuri Gagarin became the first man in space, as well as the first man to complete a full orbit of the Earth. -
Apollo 11 touches down on the moon
Apollo 11 sets down on the moon. A day later, Neil Armstrong became the first man to set foot on the moon. -
Lunokhod 1 Rover touches down on Moon
The Soviet Lunokhod 1 unmanned rover touched down on the surface of the moon on this date, becoming the first one ever on the surface. -
Pluto no longer identified as a planet
On this day, Pluto was officially no longer considered a planet by common astronomy.
