Unit 1

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Across
  1. 3. — It is a piece of rock from space that falls to the Earth.
  2. 5. — It is a vehicle that travels in space.
  3. 7. — They are bright objects that shine in the night sky.
  4. 9. — It includes all of space, stars, planets, and galaxies.
  5. 10. — It is a huge group of stars, gas, and dust.
Down
  1. 1. — It is an object in space with a bright tail.
  2. 2. — It is an instrument used to look at objects far away in space.
  3. 3. — It is the natural satellite of the Earth.
  4. 4. — It is a place where scientists study space and the stars.
  5. 6. — It is a large rock that moves around the Sun.
  6. 8. SYSTEM — It includes the Sun, planets, and other objects in space.