If the Sun appears to be about 32 arcminutes across at Earth,how large does it appear to be at Saturn (with an orbital semimajor axis of 9.5 AU)?
A) 304 arcminutes
B) 11 arcminutes
C) 3.4 arcminutes
D) 0.35 arcminutes

Question

Quizplus · Accepted Answer

The apparent size of the Sun decreases with distance. Since Saturn is about 9.5 times further from the Sun than Earth, the apparent size of the Sun from Saturn would be 1/9.5 times its size seen from Earth. Therefore, 32 arcminutes / 9.5 ≈ 3.4 arcminutes.

If the Sun Appears to Be About 32 Arcminutes Across