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LEO is Low Earth Orbit

MEO is Medium Earth Orbit

The E is short for the same thing in this case.

GEO for Geostationary and HEO for High-Eccentricity are interesting, though.

MEO is Middle Earth Orbit. We have to keep an eye on what Gandalf is up to.

That orbit has only really been possible since the sinking of Numenor. Better make use of it now that we can.

SubEarthOrbit for the dwarves

…but they orbit too deep, and too greedily.