The moon has a smaller gravitational field strength. On the Moon, g = 1.6 N/kg. In other words, a 1 kg mass has a weight on the Moon of 1.6 N. The weight of the girl on the Moon is 72 N.

New measurements indicate that the Moon formed from material ejected from ... Isotopes are varieties of the same element that differ only in the weight of their nucleus. The team used an improved ...