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Q&A Natural ways to acquire gravity for a colony on earth's moon

No, going deeper into the moon would reduce gravity. This is covered by the shell theorem of gravity, proved by Newton centuries ago. If you have an evenly-distributed mass shaped as a hollow sph...

posted 3y ago by Olin Lathrop‭

Answer
#1: Initial revision by user avatar Olin Lathrop‭ · 2021-06-14T12:51:25Z (over 3 years ago)
No, going deeper into the moon would <i>reduce</i> gravity.

This is covered by the <i>shell theorem of gravity</i>, proved by Newton centuries ago.  If you have an evenly-distributed mass shaped as a hollow sphere, then two things follow:<ol>

<li>Outside the shell, the gravity is the same as if the mass was all at the center of mass point.

<li>Inside the shell there is no gravity.  All the gravitational attractions to the various parts of the shell cancel, regardless of where you are inside the hollow shell.

</ol>