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Sunday, November 27, 2022
Home This illustration shows magnetic field lines that Earth generates today. The Moon no longer has a magnetic field. (NASA) This illustration shows magnetic field lines that Earth generates today. The Moon no longer has a magnetic field. (NASA)

This illustration shows magnetic field lines that Earth generates today. The Moon no longer has a magnetic field. (NASA)

This illustration shows magnetic field lines that Earth generates today. The Moon no longer has a magnetic field. (NASA)

This illustration shows magnetic field lines that Earth generates today. The Moon no longer has a magnetic field. (NASA)

The Earth and Moon, shown here in a composite of two images from the Galileo mission of the 1990s, have a long shared history. Billions of years ago, they had connected magnetic fields. (NASA/JPL/USGS)