A compass taken to Earth’s moon does not point in a specific direction on the moon. What is the most likely reason for the difference between how the compass works on Earth and on the moon?

A compass needle aligns with a planet’s magnetic field, which gives it a consistent direction. Earth has a strong global magnetic field, but the moon does not have a strong magnetic field, so a compass needle there would not point reliably in a specific direction. Bodies of water and the atmosphere are not what make a compass work.

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