Space

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Across
  1. 2. a person who has been trained for travelling in space
  2. 5. a vehicle in which people can travel round the earth, outside its atmosphere, doing scientific tests
  3. 6. a large part of the air on earth, and is needed by animals and plants to live
Down
  1. 1. everything that exists, especially all physical matter, including all the stars, planets, galaxies, etc. in space
  2. 3. a cylinder-shaped device for making objects that are far away look closer and larger, using a combination of lenses, or lenses and curved mirrors
  3. 4. he round object that moves in the sky around the earth and can be seen at night
  4. 7. the planet third in order of distance from the sun, between Venus and Mars; the world on which we live