Space

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Across
  1. 2. system of millions or billions of stars together with gas and dust, held together by gravitational attraction
  2. 3. fixed luminous point in the night sky which is a large, remote incandescent body like the sun
  3. 7. collection of eight planets and their moons in orbit round the sun
  4. 9. first man to go into space
Down
  1. 1. the bigger is the star …… it is
  2. 3. star that suddenly increases greatly in brightness because of a catastrophic explosion
  3. 4. the closer the color of a star is to white, the …… it is
  4. 5. cloud of gas and dust in outer space
  5. 6. celestial body moving in an elliptical orbit round a star
  6. 8. star of our solar system