- Does every black hole contain a singularity?
- How can astronomers know things for certain since they only look at space from one vantage point?
- How does astrology work?
- How does the expansion of the universe make outer space a vacuum?
- Is there any difference between antimatter, dark matter, dark energy, and degenerate matter?
- What is it about a full moon that makes people do crazy things and commit crimes?
- What is the strongest magnetic field possible? Is there a limit?
- Where is the center of the universe?
- Why are stars not blurred even though the earth is moving?