Across
- 3. a binary star of magnitude 0 that is the brightest star
- 4. the force that keeps us on earth
- 6. a cloud of dust or gas
- 9. a colorless and odorless gas
- 10. a space probe launched by NASA in 1977
- 11. relatively small star with and low luminosity
- 13. a region of the solar system beyond the orbit of Neptune
- 16. a north star
- 17. barred spiral galaxy
- 22. the time a space station travels around Earth
- 23. a large object that gets sent into space
- 24. a celestial body moving in an orbit around a star
- 26. an artificial body placed in orbit
- 27. a property of matter
Down
- 1. a small piece rock or dust that hits Earth's atmosphere from space
- 2. an irregular band of light
- 5. the natural satellite of Earth
- 7. the distance light travels in a year
- 8. a group of stars that make a pattern
- 9. a space telescope that takes pictures of space in space
- 12. a large spacecraft in orbit around earth
- 14. gravitational field so strong nothing can escape
- 15. a system of stars and many other things bound together by gravity
- 18. when an object circles around a star
- 19. the planet we live on
- 20. the property of the body that's in inertia
- 21. is a giant ball of gas and heat
- 25. an optical instrument that looks into space