How Much Does the Moon Weigh?


Quick Answer

The moon is moving through space in free-fall and is therefore regarded as weightless. Weight, defined as the net force of gravity on an object, is not relative to an orbiting body such as the moon.

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How Much Does the Moon Weigh?
Credit: NASA Goddard Space Flight Center CC-BY-2.0

Full Answer

The moon does have mass, which can be taken as a stand-in for weight. The moon's mass is roughly 7.3477×10^22 kilograms, or 73.5 million million million metric tonnes. This is the figure that would most likely register on a standard scale if the moon could be brought to Earth and weighed and if the Earth's gravity acted equally on all parts of the moon.

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