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http://www.basicknowledge101.com/subjects/space.html http://www.basicknowledge101.com/subjects/space.html has interesting details about Earth e.g. Earth day was
by known 8y ago
http://www.basicknowledge101.com/subjects/space.html http://www.basicknowledge101.com/subjects/space.html has interesting details about Earth e.g. Earth day was only 6 hours long 4.5 Billion years ago