Space crossword

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Across
  1. 4. a large galaxy surrounded by dwarf galaxies
  2. 5. fastest rotating neutron star
  3. 6. space between stars of a galaxy
  4. 8. theory explaining origin of universe
  5. 9. displacement in apparent position of a star
Down
  1. 1. a dark asteroid belt of our solar system
  2. 2. imaginary belt of constellations in sky
  3. 3. supermassive blackhole at distant space
  4. 4. second largest space telescope
  5. 7. a cloud of gas and dust in space