human
What are the most common questions about astrophysics?
assistant
1. What is the speed of light?
2. How do stars form?
3. Why is the universe expanding?
4. How did life begin on Earth?
5. How many planets are there in our galaxy?
6. Is there intelligent life elsewhere in the universe?
7. What is dark matter and dark energy?
8. How do galaxies form and evolve?
9. How does gravity work?
10. What is the Big Bang Theory?