You are on a deep space mission to search for Earth-like planets. Your crew locates a possible planet and with scanners find the radius to be 7.5 x 10⁶ m. A team lands on the surface. There, they hang a 1.0 kg mass from a spring scale. It reads 8.5 N. Determine the mass of the planet using Newton's law of universal gravitation.
a. 1.2 x 10²⁴ kg
b. 1.6 x 10²⁴ kg
c. 2.0 x 10²⁴ kg
d. 2.4 x 10²⁴ kg