science planet crossward

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Across
  1. 6. when a object in space moves in the reverse sense of normal
  2. 7. the time after sunset or before sunrise.
  3. 9. the diameter of a telescope's main lens or mirror.
  4. 11. latin for cloud.
  5. 13. a vast collection of stars, gas, and dust.
  6. 14. way-a broad faintly glowing band stretching across the night sky.
Down
  1. 1. year- the distance of light that travels in one year
  2. 2. a star that ended its life with a huge explosion.
  3. 3. a massive ball of gas (example sun).
  4. 4. this thing is basically a blanket of gases surrounding a planet.
  5. 5. dirty snowball in space.
  6. 8. a plot of the number of pixels in an image.
  7. 10. the angular distance the moon or a planets is from the sun
  8. 12. hole- nothing, not even light, can escape gravitational pull once swallowed up.