The sun is a ____, a ____ of ____, at the centre of the solar system. ____ and moons revolve around the sun in elliptical orbits. Moons are ____ satellites that orbit the planets. ____ satellites are objects placed in orbit to collect ____ and for ____. ____ are large pieces of rock. Most asteroids are found in a “belt” between ____ and ____. A ____ is ____ that enters the Earth's surface. ____ revolve around ____. Planets move in two simultaneous ways: rotation and revolution. ____ is when the planet ____ on its axis. The Earth takes ____ to complete one rotation. ____ is when the planet ____ around the sun. The Earth takes ____ days and ____ hours to move around the sun.

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