4/12/22 Astronomy!

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Across
  1. 2. A unit of measure approximately 6 trillion miles, measured using photons and time.
  2. 4. A “dirty snowball” of ice and rocky debristhat orbits the Sun in a long ellipse.
  3. 5. Very large and containing billions of stars.
  4. 7. A distinctive pattern of stars.
  5. 8. Great clouds of glowing gas lit up by stars.
  6. 9. A concentration of mass so dense that nothing can escape its gravitational pull.
  7. 10. A brief streak of light caused by a small piece of solid matter entering Earth’s atmosphere.
Down
  1. 1. An event that occurs when the shadow of a planet or moon falls upon a second body.
  2. 3. When an object moves in the reverse sense of “normal” motion.
  3. 6. A solid body orbiting the Sun that consists of metal and rock.