How would a better understanding of the Sun help us understand the threat created by greenhouse gas
emissions? How could these observations be carried out? Is a visible light telescope on Earth or in
space enough to determine how the atmosphere and the Sun interact?
2. How are sunspot numbers determined and linked to short-term climate change? Is there evidence that
sunspots are related to other phenomena, such as stock market cycles or clothing styles? Explain.
3. What forms of nonrenewable and renewable energy are solar energy? How much of the Earth’s energy
needs could be replaced by renewable forms of solar energy?
4. Could life exist in a molecular cloud? How can astronomers peer into molecular clouds to see what is
going on inside when visible light will not penetrate these regions of space? Explain.