Sky

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Across
  1. 3. The star at the center of our solar system, a source of light and heat.
  2. 5. A colorful arc formed by sunlight refracting through raindrops.
  3. 6. The layer of gases surrounding Earth, including the sky.
  4. 8. Visible masses of water droplets or ice crystals in the sky.
  5. 10. A streak of light caused by a space rock entering Earth's atmosphere.
Down
  1. 1. The period of dim light before sunrise and after sunset.
  2. 2. Natural light display in the sky, often near the poles.
  3. 4. A celestial object with a bright nucleus and a tail.
  4. 7. Earth's natural satellite that orbits around it.
  5. 9. Luminous celestial objects that twinkle in the night sky.