Space

123456789
Across
  1. 3. A very bright object that's similar to star and far away in space
  2. 4. an act of counting numbers in reverse order to zero
  3. 6. The explosion of a star
  4. 8. a system of stars held together by gravitational attraction
  5. 9. The largest planet in the solar system
Down
  1. 1. Another word for'The Earth'
  2. 2. the region beyond Earth's atmosphere
  3. 5. the seventh planet from the sun
  4. 6. A fixed luminous point in the night sky
  5. 7. A celestial body moving in an elliptical orbit around a sun