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Results tagged with earth
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user 11161
For questions about planet Earth as we know it. Changed Earths (extra moon, closer solar orbit, etc) should use the [earth-like] tag.
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Duplicate Earth and Moon, where should I put it?
Given today's level of technology it would be impossible to not know about the other Earth that has the same orbital period that we do within a few years or less no matter where you place the other Earth … If you placed the other Earth exactly opposite from this one, then the period of time before the worlds collide should be on the order of thousands to millions of years. …
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