Across
- 4. object with so much gravity light gets trapped
- 6. waves that are between inferred and radio waves
- 8. 300,000km/sec
- 10. death of a large star
Down
- 1. large grouping of stars in space
- 2. grouping of stars which our solar system is a part
- 3. center of a galaxy
- 5. all space and matter
- 7. self luminous celestial body
- 8. luminous celestial body that earth revolves around
- 9. waves used in medical astronmical applications