6.3. Satellites (or Moons)

(Source: http://nssdc.gsfc.nasa.gov/planetary/factsheet/)

A satellite (or moon) is a solid heavenly body that revolves round a planet. The moon revolves round the earth, so moon is a satellite of the earth.. Except Mercury and Venus all other planets of solar system have satellites. The satellites have no light of their own. They shine because they reflect the light of the sun. It should be noted that though we commonly call earth’s natural satellite as moon, the satellites of all other planets can also be called their moons.