Does the fact that the entire galaxy was involved in bringing forth life on Earth change your perspective
of Earth or life in any way? Explain.
2. How did the Big Bang go from being an idea to a theory? Explain.
3. How are the cycles of matter on Earth and in the galaxy similar?
4. What evidence have astronomers found that support the theory that the universe will continue to
5. What is dark energy and dark matter? How will they affect the future of the universe?