21. We weigh less when the Moon is overhead – What we call weight is the downward force resulting from Earth’s gravitational pull on our mass. But Earth isn’t the only one pulling us towards it. The Moon also exerts a force on us, cancelling out some of Earth’s attraction when it is directly overhead. Being much smaller and also farther away from us, the Moon’s magnetic field is much weaker, meaning the effect is almost imperceptible: ie a 100-kilogram (220-pound) person would weigh just 0.5 grams (0.02 ounces) less. Conversely, when the Moon is on the opposite side of Earth to you, you weigh a fraction more.
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