Solar system

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Across
  1. 1. A system of millions or billions of stars, together with gas and dust.
  2. 4. A small body of matter from outer space that enters the earth's atmosphere and makes a streak of light.
  3. 5. year a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km
  4. 7. a fixed luminous point in the night sky which is a large, remote incandescent body like the sun
  5. 8. A celestial object consisting of a nucleus of ice and dust
  6. 11. An artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
  7. 12. A celestial body moving in an elliptical orbit around a star.
Down
  1. 2. A small rocky body orbiting the sun found, between mars and Jupiter
  2. 3. the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.
  3. 4. A piece of rock or metal that has fallen to the earth's surface from outer space
  4. 6. A spot or patch that appears from time to time on the sun's surface that appears dark
  5. 9. the curved path of a celestial object or spacecraft round a star, planet, or moon
  6. 10. system the collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
  7. 11. the star that Earth orbits around. It also provides light.