Across
- 1. center of a galaxy
- 3. grouping of stars in space grouping of stars which our solar system is a part
- 7. transfer of energy through matter space
- 8. object with so much gravity light gets trapped
- 9. distance between two corresponding points adjacent on a wave
- 10. theory that said the universe started as a small point and expanded from there about 13.7 billion years ago
- 11. waves that are between inferred and radio waves
- 13. waves that are used in medical and astronomical perposes
- 15. distance light travels in one year
- 16. 300,000km/sec
Down
- 2. radiation consisting of electric and magnetic waves
- 4. visible light spectrum that gives us the colors we see
- 5. luminous celestial body that earth revolves around
- 6. instrument used to see far away
- 12. death of a large star
- 14. waves with long wave lengths and low/high frequencies
- 16. self luminous celestial body