Across
- 4. - A colorful cloud of gas and dust in space
- 5. - All of space and everything within it
- 6. - Tiny particles left behind by stars
- 8. - A streak of light from a rock entering Earth’s atmosphere
- 9. - A vehicle used for space exploration
Down
- 1. - A person trained to travel in space
- 2. - The force that pulls objects toward one another
- 3. - A massive system of stars and planets
- 6. - Related to the sun, as in the solar system
- 7. - A small rocky body orbiting the sun