Moon is shrinking and poses danger to future human colonies there, warns study

The moon has shrunk more than 150 feet in circumference in the last few hundred million years, and due to its brittle surface, faults have formed where sections of crust push and crash against one another

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United States , America , Nicholas Schmerr , Thomas Watters , University Of Maryland , Apollo Passive Seismic Experiment , Professor Schmerr , The Moon , Nasa ,