Across
- 6. What type of star is our Sun?
- 7. The type of galaxy that our solar system is
- 8. The name of our galaxy _______ Way
- 10. The 4 inner planets, ______, Venus, Earth, and Mars
- 12. Stars are classified by this mostly
- 14. New stars form in clouds of gas and dust, called ________
- 21. Cooler, darker areas of the Sun
- 22. The nearest star to Earth, _______ Centauri (not including our Sun)
- 23. Explosion of a star
- 24. When a light source moves away from us, the consequent stretching out of wavelengths is called ______
- 25. The lowest temperature star
- 27. Grouping of stars in organized patterns
- 29. The clouds are made mostly of carbon dioxide
- 30. The hottest color of star
Down
- 1. These have so much gravity that no light can escape them. (2 words)
- 2. This law states that the farther away a galaxy is, the faster it is moving away from us
- 3. How many stars does our solar system have?
- 4. A group of stars, gas, and dust that is bound together by gravity
- 5. 2 light atomic nuclei combine to form a single heavier one.
- 9. Who proved that planets move in elliptical orbits, with the Sun at one focus
- 11. It includes all matter, space, and time
- 13. Last of the gas planets, farthest from the Sun
- 15. A type of galaxy
- 16. Giant balls of high temperature glowing gas
- 17. The largest planet in size.
- 18. After the _____ happened hydrogen nuclei collided and fused into helium nuclei (2 words)
- 19. Average distance from the Earth to the Sun, ______units.
- 20. The study of the universe
- 26. The asteroid belt is located between ______ and Jupiter
- 28. The nearest gas giant to the Sun