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![Galileo Debate](../images/gal_of.gif) |
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Find
out why Galileo's observations of sunspots in the
17th century were so controversial. Visit the Galileo
Debate. |
![Galileo image](../images/gal_ph.gif) |
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Related
to chapter 1 of the print guide. |
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![Solving a Mystery](images_1/solve_of.gif) |
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Scientists
use the same techniques as detectives to solve
mysteries. |
![](../images/bookicsm.gif) |
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Related
to chapter 1 of the print guide. |
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![Seeing the Aurora](../images/auror_of.gif) |
![](../images/square4.gif) |
Find
out why it is so unusual to see
the Northern Lights as far south as Tucson,
Arizona. |
![Aurora image](../images/auror_ph.jpg) |
![](../images/bookicsm.gif) |
![](../images/spacer.gif)
Related
to chapter 1 of the print guide. |
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![](../images/spacer.gif) |
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