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zenzil
2008-Jan-11, 11:58 PM
Dear friends,
"On January 4, 2008, a reversed-polarity sunspot appeared—and this signals the start of Solar Cycle 24," says David Hathaway of the Marshall Space Flight Center.
I am thankful if you could kindly explain how and when the Solar Cycle 01 started.

zenzil

01101001
2008-Jan-12, 12:43 AM
I am thankful if you could kindly explain how and when the Solar Cycle 01 started.

DX Listener's Club Norge (http://www.dxlc.com/solar/cycl1.html) (Norwegian)


Cycle 1 began in March 1755 with a smoothed sunspot number of 8.4 and ended in June 1766.

It just appears to be the first of a sequence of cycle observations that has continued until this the 24th cycle.

Here, this is slightly more informative:

Science@NASA: Long Range Solar Forecast (http://science.nasa.gov/headlines/y2006/10may_longrange.htm)


A word about solar cycles: Astronomers number each 11-year solar cycle, 1, 2, 3 and so on. For obscure historical reasons, Solar Cycle 1 is a nondescript cycle which peaked in 1760.