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What Is the Size of the Moon?


The moon is measured in many different ways. The size of the moon can be measured according to its diameter, its surface area, its volume, and itís mass.

The diameter of the moon is 3,474 km. Need some comparison? The diameter of Earth is 12,742 km across. That means that the moonís size is roughly 1/4th the size of Earth.

The surface area of the moon is 37.9 million square kilometres. That sounds like a lot, but itís actually smaller than the continent of Asia, which is only 44.4 million square km.

The volume of the moon is 2.195 x 1010 km3. That sounds like a huge number, but itís actually only 2 percent the volume of Earth. In other words, you could fit 50 moons inside the volume of Earth.

The moon's mass is 7.3477 ◊ 1022 kg, which is only equal to 0.0123 Earths.

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