Across
- 2. the hottest region of the sun
- 4. a symmetrically shaped oval
- 7. Galaxy look like giant pinwheels spinning through the void of space
- 8. a star system containing from millions to billions of stars
- 11. the stars outlining such an imaginary picture
- 13. blanket of air, makes the earth hospitable for living
- 16. Year the distance light travels in one year
- 17. Scientists who study outer space, try to understand what the stars, planets, and all other heavenly bodies are like and what affects they have on each other
- 18. the force of attraction that exists between any two objects
Down
- 1. Layer a region of atmosphere between 10 and 30 miles above the surface of the earth
- 3. a haze of very hot gases that extend hundreds of thousands of miles from the surface of the sun
- 5. explosion of a star-a cosmic catastrophe of amazing
- 6. the brightness of a star is known as its...
- 7. patches of gas that are cooler than the rest of the sun, showing as darker blotches through a telescope
- 9. the sun's visible surface
- 10. the forces that resists motion
- 12. large clouds of gas and dust floating in space
- 14. Way the galaxy in which we live
- 15. Spirals the spiral arms are attached to a straight bar that runs through the center of the galaxy