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DOES THE SUN MOVES OR REVOLVES
The sun rotates on its own axis. The most convincing evidence of this is through the discovery and observation of sunspots (areas on the surface of the sun that are cooler in temperature, thus appearing as black spots - first observed by Galileo in the early 1600s). Sunspots come and go, isolated or in groups, and can be large or very small. The number of sunspots visible follows a cycle of solar activity of approximately 11 years thus revealing a cyclic pattern or rotation of the sun.


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