"Moons of Moons" –Could Serve as an Outpost for a Technological Civilization – The Daily Galaxy –Great Discoveries Channel

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“Moons of Moons” –Could Serve as an Outpost for a Technological Civilization  The Daily Galaxy –Great Discoveries Channel

“An artificial submoon may be stable and thereby serve as a time capsule or outpost for a technological civilization. On a stable orbit around the Moon–such as …

Source: Science News