http://lamed.livejournal.com/ ([identity profile] lamed.livejournal.com) wrote in [personal profile] shvarz 2011-03-20 08:40 am (UTC)

Точных данных такой давности нет. За последние 150 лет есть измерения, но их сложно сопоставить с современными. За 30 лет есть более-менее достоверные измерения, а за 10 есть абсолютно точные данные со спутников.
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