<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">extraterrestrial bases</topic></authority><related type="narrower"><topic>lunar bases</topic></related><related type="other"><topic>space colonies</topic></related><related type="other"><topic>space stations</topic></related><related type="broader"><topic>extraterrestrial structures</topic></related><variant type="other"><topic>bases, extraterrestrial</topic></variant><variant type="other"><topic>bases, space</topic></variant><variant type="other"><topic>extraterrestrial base</topic></variant><variant type="other"><topic>space bases</topic></variant> <note xml:lang="en"><![CDATA[ Use only for manned installations established on natural extraterrestrial bodies for specific functions. For larger communities established in space or on natural extraterrestrial bodies, use "space colonies." For manned artificial satellites set to revolve in a fixed orbit and serving as a base for specific functions, use "space stations." ]]></note></mads>