Artemis I should be launching soon. The mission of the program is to create a base on the moon for future voyages to Mars. The will experience three (3) different gravities on their journey. The table below contains the planets mass, diameter, and gravity:

Planet	Mass (kg)	Diameter (m)	Gravity(g)
Earth	5,973,600,000,000,000,000,000,000	12,756,000	9.765
Moon	73,460,000,000,000,000,000,000	3,475,000	1.623
Mars	641,690,000,000,000,000,000,000	6,792,000	3.711

Develop a program to calculate the gravity based on the following formula:

where g is gravity, G the gravitational constant, M mass and R the planets radius. The Gravitational constants value is 0.0000000000667.

Your program needs to be written so the user inputs the planets diameter per the table above.

g=R2GM