Top Permanent Quotes
NASA astronauts have only managed to live continuously on the International Space Station (ISS) for a year and Biosphere 2 on Earth failed at two years of uninterrupted human habitation. Both cases re...
Steven Magee
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astronauts, base, biosphere, both, cases, continuously, earth, environments, extracting, failed
Permanent Definition
(a.) Continuing in the same state, or without any change that destroys form or character; remaining unaltered or unremoved; abiding; durable; fixed; stable; lasting; as, a permanent impression.