Environment

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Across
  1. 3. I fly and I am colourful
  2. 4. I am blue and I have moon as my guest.
  3. 5. I am of different shapes and in different positions in the sky, who am I?
Down
  1. 1. I am tall and I do not move
  2. 2. I can be cool and hot
  3. 4. I am hot and I am red or orange