UNIVERSE

123456789101112131415
Across
  1. 2. The farthest known type of space object that releases huge amounts of energy.
  2. 5. A glowing ball of gas held together by gravity.
  3. 7. The invisible force that pulls objects toward each other.
  4. 9. A gigantic explosion that marks the death of a massive star.
  5. 10. A telescope that orbits Earth and observes deep space.
  6. 12. A rotating celestial body that orbits a star.
  7. 14. A space object made of ice and dust with a tail.
Down
  1. 1. The red planet, fourth from the Sun.
  2. 3. The entirety of space, time, matter, and energy.
  3. 4. matter The invisible matter that makes up most of the universe's mass.
  4. 6. The path an object takes as it revolves around another object in space.
  5. 7. A huge system of stars, dust, and gas held together by gravity.
  6. 8. The star at the center of our solar system.
  7. 11. The first event that began the universe.
  8. 13. The third planet from the sun, our home.
  9. 15. A natural satellite that orbits Earth.