bn:02198856n
Noun Concept
Categories: Solar cycles
EN
solar cycle 23
EN
Solar cycle 23 was the 23rd solar cycle since 1755, when extensive recording of solar sunspot activity began. Wikipedia
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EN
Solar cycle 23 was the 23rd solar cycle since 1755, when extensive recording of solar sunspot activity began. Wikipedia
Solar activity from 1996 to 2008 Wikidata
Wikipedia
Wikidata