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Why Does Size of the Sun Appear to Change?
Keycode: ES2603


How Does the Sunspot Cycle Affect Earth?
Keycode: ES2605

Unit Investigations


Could Mars Support Life?
Keycode: ESU701



Examine the sun at different wavelengths.
Keycode: ES2601

Data Centers


Learn more about Galileo’s telescopes.
Keycode: ES2604



Careers for all chapters

Local Resources


Local Resources for Unit 7

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