Crossword Knowledge

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Across
  1. 3. A large body in outer space that circles around the sun or another star.
  2. 6. system A set that includes a star and all of the matter that orbits it, including planets, moons, asteroids, comets, and other objects.
  3. 8. Rocks floating around in space. Some are the size of a pick-up truck. Others are hundreds of miles across.
  4. 9. An icy rock that lets off gas and dust, which may form tails when it is flying close to a sun.
Down
  1. 1. hole A place in space where matter and light cannot escape if they fall in.
  2. 2. The streak of light caused when a meteoroid enters a planet’s atmosphere and starts to burn from the heat of friction.
  3. 4. A vehicle used for traveling in space.
  4. 5. A collection of thousands to billions of stars held together by gravity. The galaxy we live in is called the Milky Way.
  5. 7. All of space and time, and everything in it. It’s everything ever!
  6. 10. The curved path that a planet, satellite, or spacecraft moves as it circles around another object.