Across
- 2. What does the big bang theory suggest is happening to the universe?
- 4. How many years ago did the big bang happen?
- 5. Which form of electromagnetic wave has the shortest wavelength?
- 7. What equipment is used for us to observe the universe?
- 8. What shift is evidence that galaxies are moving away?
Down
- 1. CMBR stands for Cosmic Background Radiation. What does the 'M' stand for?
- 3. What is our galaxy called?
- 6. What is the name of the effect when an ambulance or police car goes past and its siren is high-pitched as it comes towards you, then becomes low-pitched as it goes away.