Kepler's LawsHardQuestion 6267
Question
Mars is ~1.52 AU from Sun. Its orbital period (Earth's = 1 year, 1 AU = Earth-Sun distance):
- A~1.87 yearsCorrect
- B~3.5 years
- C~1.52 years
- D~2.3 years
Correct answer
~1.87 years
Explanation
T² ∝ r³. T = (1.52)^(3/2) ≈ 1.52^1.5 ≈ 1.87 years.