Solar System, The Sun and all the planets, moons, and other space objects that move around it. Earth is part of the Solar System., Orbit, The path that a planet, moon, or other space object takes as it moves around another object, like how the Earth orbits the Sun., Terrestrial, Something that is related to the Earth. Terrestrial planets, like Earth, are made of rock., Neighbourhood, The area around where you live, or in space, the area around a planet or star., Diameter, The distance from one side of a circle to the other, passing through the centre., Dwarf, Something that is much smaller than usual. In space, a dwarf planet is a small planet that is not big enough to be a full planet, Boulders, Big, heavy rocks, usually found on the ground or in space on planets and asteroids, Asteroids, Small, rocky objects that orbit the Sun., Galaxy, A huge group of stars, planets, gas, and dust held together by gravity., Universe, everything that exists, including all galaxies

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