Across
- 3. A person trained for space exploration
- 6. A luminous point in the sky
- 7. A region with gravitational pull so strong not even light can escape
- 9. A device used to observe distant objects in space
- 10. A system of stars and planets
Down
- 1. The path of a celestial body around another
- 2. Everything that exists
- 4. The universe as an orderly system
- 5. A celestial body orbiting a star
- 8. A cloud of gas and dust in space