Across
- 3. a big, bright object that gives Earth light at night
- 4. the sun, planets, and moons exist here
- 6. astronauts use this to fly into space
- 8. the planet human life is found on
- 10. a place that studies natural events
Down
- 1. a tool that allows people to see the stars
- 2. everything that exists in life
- 5. hot, explosive balls of gas that make their own light
- 6. largest star in solar system that heats Earth
- 7. made of dust and ice that travels around the sun
- 9. rocky objects that travel through space