Across
- 2. the force that keeps us on the ground and keeps everything put together
- 4. are sun is a giant ____
- 9. the international space station travels around the earth this fast
- 11. there are 8 of them in our solar system
- 12. space prob launched by NASA in 1977
- 14. a device put in orbit around the earth and moon
- 16. a long time ago in a ___ far far away
- 17. the part of the galaxy that we live in (a candy bar)
Down
- 1. a group of stars the make a picture in the sky
- 3. earth __ the sun and the moon __ the earth
- 5. a synonym for weight
- 6. a part in space that the gravitational pull is so much that nothing can escape it
- 7. can either be a stellar or planetary of these
- 8. the time light will travel in on year
- 10. a gas that is highly flammable
- 13. a triple star system in the southern constellation of Centaurus
- 15. the planet we live on