- the gravitational pull of Earth on Moon is 2.0 x 10²⁰ N. - The gravitational constant of the universe, G, is 6.67 x 10⁻¹¹ m³/kg - The mass of the earth is 5.98 x 10²⁴ kg. - The distance between the earth and the moon is 3.84 x 10⁸ m. Calculate the mass of the moon.