The document discusses the phases of the moon and provides details on the 8 main phases as the moon orbits the Earth over approximately 28 days. It also briefly mentions the 9 planets in our solar system and notes that gravity causes the moon to orbit Earth.
19. Solar systems, galaxies and the Universe OUR SUN is one of millions of stars that orbit the centre of… THE MILKY WAY, which is one of a billion galaxies that orbit AND move away from the centre of… THE UNIVERSE