Question

1.What does the term 'Sidereal Year' refer to?

a. The time it takes between two successive summer solstices,
for example
b. The length of an epicycle of Jupiter
c. The time it takes for the Sun to orb

Answer 1

The term 'Sidereal Year' refers to the time it takes for the Sun to orbit around the celestial sphere once with respect to the fixed stars.

Therefore, the correct answer is: c. The time it takes for the Sun to orbit around the celestial sphere once with respect to the fixed stars.