Human: What are some good questions about the universe that can be answered using physics? Assistant: 

1. How old is the universe?
2. What is the mass of the Higgs boson?
3. How many particles are there in the Standard Model?
4. How do you know that the Standard Model is correct?
5. How did the universe begin?
6. Why does time flow forward?
7. Is there a theory of everything?