Astronomers After the Dark Ages

Question 1

Studied Aristarchus’ work and reintroduced the idea of a heliocentric system

Answer 1

Copernicus

Question 2

Major flaw of the Copernican heliocentric system

Answer 2

Circular orbits

Question 3

Made precise and the most accurate measurements of the sun, moon, stars, and planets of his time.

Answer 3

Tycho Brahe

Question 4

He observed a supernova in the constellation Cassiopeia, which began the idea that the heavens could change.

Answer 4

Tycho Brahe

Question 5

Brahe hired this astronomer to work closely with him to revise his current data tables of planetary positions.

Answer 5

Kepler

Question 6

Kepler established three laws of planetary motion that gave us this kind of solar system that we still use today.

Answer 6

Heliocentric model

Question 7

Kepler discovered that objects orbit the sun in what shape?

Answer 7

Ellipse (elliptical)

Question 8

This astronomer used a telescope to study the sky and had several major findings which advocated the heliocentric model.

Answer 8

Galileo Galilei

Question 9

This finding/observation by Galileo disputed Aristotle’s theory that all heavenly objects orbit the Earth.

Answer 9

Four moons of Jupiter

Question 10

Wrote a pioneering book suggesting the heliocentric theory, but didn’t want this to be published for fear of criticism because his ideas were highly radical for the time.

Answer 10

Nicholas Copernicus