Sunspots vs. Incandescent Light Bulbs
The Sun. Our own personal star. The energy output of this giant is not constant. It is variable. The Sun is in a constant state of flux. The Sun goes around in cycles, the smallest of which is about 11 years, and some larger ones are as long as 8000 years. Energy output during these cycles can severely change. Not only that, but our planet is constantly moving towards and away from it, in various angles and speeds. Just the angle and distance of us to the Sun creates the temperature differences between summer and winter. The way we face the sun influences the temperature difference between day and night.
It has been shown that the temperature changes in Earth’s history closely follow read more

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