Do You Know Space?

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Across
  1. 4. The measure of light produced by an object per unit of time
  2. 6. The fourth planet from the Sun and the second smallest planet in the solar system
  3. 7. A part of space having a gravitational pull so intense that no matter can escape
  4. 8. An incredibly bright explosion of a star at the end of its life
  5. 10. The seventh planet from the Sun and is a ice giant
  6. 11. The second planet from the Sun and also know as Earth's twin
Down
  1. 1. The farthest planet from the Sun and is the coldest.
  2. 2. A large and luminous star in the late stage of stellar evolution
  3. 3. The third planet from the Sun and the only planet in the universe confirmed to hold life
  4. 5. A standard unit of mass in astronomy used to measure stars, black holes, and galaxies
  5. 6. The smallest planet in our solar system and the closest to the sun
  6. 8. The sixth planet from the Sun and the second largest in the solar system
  7. 9. The fifth planet from the Sun and the largest in the solar system