30 \times 10^5 \) km
- Distance from the spacecraft to the Earth, \( r_e = 3.07 \times 10^5 \) km
- Gravitational constant, \( G = 6.674 \times 10^{-11} \, \text{N m}^2/\text{kg}^2 \)
- Mass of the Moon, \( M_m = 7.35 \times 10^{22} \) kg
- Mass of the Earth, \(
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