Astronomy Crossword

12345678
Across
  1. 3. A large cloud of gas and dust.
  2. 6. The substance which accounts for 85% of the universe.
  3. 7. Reddish loops on the Sun's surface which link sunspots.
  4. 8. The largest star in the Milky Way galaxy.
Down
  1. 1. The cloud of celestial bodies at the edge of the solar system.
  2. 2. The second smallest type of exoplanet.
  3. 4. The second closest star to earth
  4. 5. The comet in our solar system which can be seen from Earth every 76 years.