Class III lesson : 1 The Universe

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Across
  1. 2. mars is the fourth nearest planet to the sun and is also called the
  2. 6. the movement of the planet around the sun along its elliptical and fixed orbit
  3. 8. the spinning of the planet on its imaginary axis
  4. 9. many planets in the solar system have small heavenly bodies
  5. 11. the only source of heat and light in the solar system
Down
  1. 1. it includes asteroids,comets and meteors.
  2. 3. is the another name of the solar system
  3. 4. the totality of everything that exists.
  4. 5. the biggest planet of the solar system
  5. 7. morning and evening star as it appears bright to us from Earth
  6. 10. the centre of the solar system