With the Moon's terminator moving almost 10 mph (16 km/h) across its equator, how long would it take for an observer using binoculars to notice a change in lunar features?

Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronomy.com/magazine/ask-astro/2015/11/lunar-terminator
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Дата индексирования: Sun Apr 10 11:02:04 2016
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With the Moon's terminator moving almost 10 mph (16 km/h) across its equator, how long would it take for an observer using binoculars to notice a change in lunar features? | Astronomy.com

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