1. What is the only metal that is liquid at room temperature?

2. What nickname did Albert Einstein give to quantum entanglement?

3. What percentage of the universe is estimated to be composed of Dark Energy?

4. Approximately how many years after the Big Bang was the light of the CMB released?

5. What concept describes the total amount of disorder in a system?

6. Which gas is primarily responsible for the common green color seen in an Aurora?

7. What is the approximate value of the Chandrasekhar Limit in terms of solar masses (M_Sun)?

8. What property of a fluid becomes zero when it enters a superfluid state?

9. What does the Zeeman Effect allow astronomers to measure on stars?

10. Which type of particles are governed by the Pauli Exclusion Principle?

11. In which part of the electromagnetic spectrum is the oldest light in the universe primarily detected today?

12. What is it called when a galaxy's light shifts toward longer wavelengths as it moves away from us?

13. Why are brown dwarfs commonly referred to as 'failed stars'?

14. What is the approximate solar mass limit for a stable white dwarf?

15. What three phases coexist at the triple point?

16. Which organisms were primarily responsible for the Great Oxidation Event?

17. What is the theoretical radiation emitted by black holes called?

18. The search for Planet X ultimately led to the discovery of which celestial object in 1930?

19. In conspiracy theories, Nibiru is often described as what type of object?

20. If Planet Nine exists, its orbital period around the Sun is estimated to be approximately how long?