Clue 2

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Across
  1. 3. Speak very softly using one's breath rather than one's throat
  2. 4. The soft glowing light from the sky when the sun is below the horizon
  3. 7. A natural light display in the sky seen in high-latitude regions
  4. 10. An enormous cloud of dust and gas in outer space
Down
  1. 1. A complicated irregular network of passages or paths
  2. 2. A mythical creature with the body of a lion and the head of a human
  3. 5. A thing that is wrongly perceived or interpreted by the senses
  4. 6. A mythical fire-breathing reptile found in many legends
  5. 8. A fertile spot in a desert where water is found
  6. 9. A person having no permanent home