The universe

1234567
Across
  1. 2. our sun and its planets
  2. 6. the place in which all the planets etc. are in
  3. 7. our sun is a ..
Down
  1. 1. we can't imagine about that cause it's to..
  2. 2. they discover the universe
  3. 3. the moon is a ... of the earth
  4. 4. it revolves our planet
  5. 5. our home planet
  6. 6. it spends light