The mass of man-earth, also known as the Earth's mass, is approximately 5.97 x 10^24 kilograms, while the mass of the moon is about 7.35 x 10^22 kilograms. This means that the Earth's mass is about 81 times greater than the moon's mass.
The mass of man-earth plays a crucial role in the moon's orbit around the Earth. The Earth's gravitational pull on the moon keeps it in orbit, and the moon's mass also affects the Earth's orbit around the sun. This phenomenon is known as the "two-body problem" in physics.
If the mass of man-earth was the same as the moon, the gravitational pull between the two bodies would be significantly weaker. This would result in a less stable orbit for the moon and potentially cause it to drift away from the Earth over time.
The standard unit of measurement for mass is kilograms (kg). However, in scientific calculations, the kilogram is often converted into its base unit, the gram (g), or its multiple, the metric ton (t), for convenience.
The mass of man-earth is relatively small compared to other planets in our solar system, such as Jupiter (1.9 x 10^27 kg) and Saturn (5.69 x 10^26 kg). The moon's mass is also significantly smaller than even the smallest planet, Mercury (3.285 x 10^23 kg). However, the moon's mass is significantly greater than that of other satellites in our solar system, such as Pluto's moon Charon (1.586 x 10^21 kg).