Modern Research on Sunspots

Modern Research on Sunspots Photo Credit: NASA


Read pages 1, 2, 4, and 5 of Modern Research, part of the Exploratorium’s Sunspots online guide, and answer the questions on this sheet.

The sun emits visible light that we can see. Describe the types of non visible light emitted by the sun.


Describe the difference between the telescopes of Galileo’s time and the telescopes used today.


How is a sunspot formed?


Are sunspots cooler or warmer than the rest of the sun’s surface?


How long is the sunspot cycle?


Describe how the Aurora Borealis (Northern Lights) and the Aurora Australis (Southern Lights) are produced by the action of sunspots.



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