-
Feb 19, 1473
Nicolaus Copernicus
Poland
Heliocentric model of universe -
Dec 14, 1546
Tycho Brahe
Sweden
Used tools to create detailed model of universe of the time
(heliogeocentric) -
Feb 15, 1564
Galileo Galilei
Italy
First Telescope -
Dec 27, 1571
Johannes Kepler
Germany,
laws of planetary motion
determined elliptical orbits -
First Non-spherical Mirror ground
No specific date
Parabolic mirror-Better image
Hadley
Britain -
Spiral Nebulae Discovered
In 1845, Lord Rosse used his
largest telescope to see the
spiral structure of M51.
Ireland -
Silver on Glass Mirror
1850’s: German chemists used
a chemical reaction to make a
silver-on-glass mirror -
First Multi-mirror Telescope Observing
MMT(multi mirror telescope) is built.
U.S.A.
Larger telescopes available -
Ptolemy
Date N/M
Geocentric model of universe
Greek
Combined and expanded on astronomical knowledge -
Hubble Telescope Launched
The Hubble Telescope, named after Edwin Hubble, is launched.
U.S.A.