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Archa

Speaks French, English, Esperanto, Na'vi and Spanish.

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  • Member for 6 years, 4 months
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  • Last seen Jul 18 '17 at 14:53

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5 What are the objects that are visible from a city? Jun 28 '14
4 What is the apparent magnitude limit for the naked eye? Jul 12 '14
3 Could light be dark matter? Jul 2 '14
3 Is Mars visible from naked-eye from Michigan (47N, 88W) these days? Jun 18 '14
2 Telescope on polluted environment Aug 16 '14
2 Can we hear something on Venus, Mars and Titan? Jul 21 '14

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