space

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Across
  1. 1. there are 8 in our Soler system (7)
  2. 4. Venus's nickname(10)
  3. 6. the name of our galaxy(9)
  4. 8. astronauts fly in them (7)
Down
  1. 2. a planet slower than Venus(5)
  2. 3. you get spaghettified if you go in(9)
  3. 5. there are lots of them(5)
  4. 7. the first name of the first person in space(4)