We’re all on the lookout for nature’s patterns. The most obvious are solar rhythms — like the recent solstice. Civilizations all paid attention to solar patterns because their food production depended on it. Next in line were the Moon’s rhythms, mostly that its phases repeat every 29.5 days. This week we cover the rhythms of the universe!
#278 Rhythms

NASA, ESA, CSA, STScI, Klaus Pontoppidan (STScI)
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Nasa.gov