Quiz On The Universe

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Across
  1. 2. Brightest star
  2. 3. On what planet is the Great Red Spot?
  3. 6. Nearest star to Earth
  4. 7. How much of the universe is in a plasma state?
  5. 8. What is the most volcanically active body in our solar system?
Down
  1. 1. The estimated age of the universe is:
  2. 2. What type of galaxy is the Milky Way galaxy?
  3. 4. How many comets are there in the solar system?
  4. 5. What do scientists use to search for life in distant space?