Galileo Galilei · Science
How a homemade telescope shattered two thousand years of belief in a perfect, unchanging heaven - and why the evidence still had to fight to be believed.
You learned that Galileo saw four moons circling Jupiter and a full set of phases on Venus. Explain, in your own words, why those sights were so damaging to the Earth-centred cosmos - and why his critics could still resist them.
Leads to Johannes Kepler.
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