human
What are the most common questions about astrophysics?
assistant
1. What is the speed of light?
2. How do we know that the universe is expanding?
3. How did the universe begin?
4. How did galaxies form?
5. Why is there so much more matter than antimatter in the universe?
6. How do black holes work?
7. What is dark energy?
8. What is the Large Hadron Collider?