Multiple Choice
How many times brighter does the Sun appear from Earth than it does from Neptune, which has an orbital radius of approximately 30 au?
A) 30
B) 30 × 2.512 = 75.4
C) (30) 2 = 900
D) 4 (30) 2 = 1130
Correct Answer:
Verified
Correct Answer:
Verified
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