Across
- 3. galaxy we live in
- 4. the planet on which we live; the world
- 5. force of gravity,not even light can escape
- 6. object that orbits another larger object
- 7. particle of rock,metal,ice traveling in space
- 8. suitable for living in or on
- 9. 2nd planet from the sun, earth's "twin"
- 13. seventh planet from the sun
- 14. object that orbits a planet or asteroid
- 15. planet that orbits a star other than the sun
- 16. object in space passes into shadow of another
- 19. shrunken star at the end of its life
- 21. all space and everything in it
- 24. smallest planet in solar system, closest to sun
- 25. huge groups of stars,gas,dust held by gravity
- 27. large spherical objects that orbits a star
- 30. place beyond earth's atmosphere
- 32. sun, planets and other objects that orbit it
- 35. orbits around sun, made of dust and ice
- 36. fourth planet from the sun, second smallest
- 39. path an object takes around another
- 40. broken pieces of rock, other materials in space
- 41. lands on a planet or moon's surface
Down
- 1. small spacecraft for crew,scientific instruments
- 2. rocket powered vehicle
- 3. thick layer of hot rock between core and crust
- 6. word used for sun
- 10. cloud of gas, dust in space where stars are born
- 11. force field around a planet,star,or galaxy
- 12. fifth planet from sun, largest in solar system
- 17. sixth planet from the sun, second-largest
- 18. huge glowing sphere,gas, creates energy at its core
- 20. one half of a planet or moon
- 22. imaginary line halfway between north/south poles
- 23. imaginary line through center of a planet, rotates
- 26. word used to relate to the moon
- 28. outer layer of a rocky planet
- 29. eight planet from the sun, farthest known planet
- 31. small/rocky planet-like body,orbits the sun
- 33. asteroids orbit together
- 34. large, bright star at the center of our solar system
- 35. central part of a star, planet, or moon
- 37. the spinning of a planet around its own axis
- 38. force that pulls objects toward each other