Solar System

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Across
  1. 2. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
  2. 6. a small rocky body orbiting the sun. Large numbers of these, ranging enormously in size, are found between the orbits of Mars and Jupiter, though some have more eccentric orbits.
  3. 7. an artificial body placed in orbit round the earth or moon or another planet in order to collect information or for communication.
  4. 8. the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.
Down
  1. 1. a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.
  2. 3. year a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607
  3. 4. a celestial body distinguished from the fixed stars by having an apparent motion of its own (including the moon and sun), especially with reference to its supposed influence on people and events.
  4. 5. the curved path of a celestial object or spacecraft round a star, planet, or moon, especially a periodic elliptical revolution.
  5. 7. the star round which the earth orbits.