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SteveO1
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HISTORY OF SCIENCE
Astronomy
Astronomiae Instauratae Progymnasmata
Tycho Brahe's Astronomiae Instauratae Progymnasmata revolutionized pre-telescopic astronomy with precise celestial observations
20 Jan 2026
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What was the key feature of Tycho Brahe's astronomical model presented in Astronomiae Instauratae Progymnasmata?
A geo-heliocentric system where Earth is stationary, the Sun orbits Earth, and other planets orbit the Sun
A purely heliocentric system with all planets, including Earth, orbiting the Sun
A geocentric system where all celestial bodies orbit the Earth directly
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SteveO1
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HISTORY OF SCIENCE
Astronomy
Astronomiae Instauratae Progymnasmata
Tycho Brahe's Astronomiae Instauratae Progymnasmata revolutionized astronomy with precise pre-telescopic observations
17 Jan 2026
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What was the key feature of Tycho Brahe's model of the solar system presented in Astronomiae Instauratae Progymnasmata?
A fully heliocentric system with all planets orbiting the Sun
A purely geocentric system with all celestial bodies orbiting the Earth
A geo-heliocentric system where the Sun orbits the Earth, and other planets orbit the Sun
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