Space pioneers

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Across
  1. 3. First artificial satellite to orbit space
  2. 4. first spacecraft to cross interstellar space
  3. 5. first rocket in space
  4. 7. First person in space
Down
  1. 1. Gagarin First person to enter the space
  2. 2. first space telescope
  3. 3. station place where scientist research in space
  4. 6. First animal in space