Class 4th 6th Assignment

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Across
  1. 3. A large object that orbits around a star and has cleared its orbit of other debris. There are eight planets in our solar system.
  2. 5. The study of objects and phenomena in outer space, including stars, planets, and galaxies.
  3. 7. The sun and all the objects that orbit around it, including planets, moons, asteroids, and comets.
  4. 10. The totality of all space, time, matter, and energy.
Down
  1. 1. A huge collection of stars, gas, and dust that are held together by gravity. There are billions of galaxies in the universe.
  2. 2. A massive, luminous ball of gas that emits light and heat. There are billions of stars in our galaxy alone.
  3. 4. A group of stars that form a recognizable pattern in the sky.
  4. 6. The natural satellite of the Earth. It orbits around the Earth and reflects the light of the sun.
  5. 8. The star at the center of our solar system. It provides light and heat to the Earth.
  6. 9. The path that an object takes as it revolves around another object.