Space Crossword 1

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Across
  1. 2. A system of stars, planets, and other objects held together by gravity.
  2. 3. A person who travels in a spacecraft.
  3. 5. The star at the center of our solar system that provides light and heat.
  4. 7. Small, rocky objects that orbit around the Sun.
Down
  1. 1. Large objects that orbit around stars, like Earth, Mars and Jupiter.
  2. 4. Glowing balls of gas in space that produce light and heat.
  3. 5. Vehicle used to travel through space.
  4. 6. Natural satellite that orbits around a plane.