space

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Across
  1. 2. A person trained to travel in space
  2. 5. A vehicle used to launch into space
  3. 6. A man-made object that orbits the Earth
Down
  1. 1. A huge system of stars, like the Milky Way
  2. 3. An instrument for looking at distant stars
  3. 4. The force that pulls objects toward Earth