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Controlled ecological life-support system
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<p>Controlled (or closed) ecological life-support systems (acronym CELSS) are a self-supporting <a href="/facts/Life_support_system/noqF51sS">life support system</a> for <a href="/facts/Space_stations/2HtaLbDH">space stations</a> and colonies typically through controlled <a href="/facts/Closed_ecological_system/Eky6mKwS">closed ecological systems</a>, such as the <a href="/facts/BioHome/MgfX6rVf">BioHome</a>, <a href="/facts/BIOS-3/7R51soyD">BIOS-3</a>, <a href="/facts/Biosphere_2/aYgS9PRh">Biosphere 2</a>, <a href="/facts/Mars_Desert_Research_Station/wUG5Vq3B">Mars Desert Research Station</a>, and <a href="/facts/Yuegong-1/jHlzetxT">Yuegong-1</a>. </p>