Question 1
Any variance in the orbit of a planet from its predicted path is referred to as ________.
◦ retrograde motion
◦ precession
◦ Ptolemaic motion
◦ occultation
◦ perturbation
Question 2
Tycho Brahe set out to disprove Copernicus, so why is he famous for developing modern astronomical theory?
◦ Although he set out to disprove Copernicus, he ultimately accepted Copernicus' theory and was executed by the inquisition.
◦ He made very precise measurements that were key data used by Kepler.
◦ He theorized the concept of gravity with no data, which was left undiscovered until Newton.
◦ None of these is correct.