Everything in the Solar System revolves around the ____. The Sun is a ____, a massive ball of hot gas that gives off light and heat. There are ____ planets that orbit around the Sun. The closest planet to the Sun is ____. The farthest planet to the Sun is ____. The biggest planet is ____. The smallest planet is ____. The ____ is the only planet that we know has creatures living on it. The Earth rotates as it orbits the Sun. It takes ____ to complete a rotation. It takes ____ for the Earth to complete one circuit around the Sun. The galaxy where our solar system is, is known as ____. ____ is the force that keeps the Earth and the other planets orbiting around the Sun. Not everything in the Solar system orbits directly around the Sun. The ____ orbits around the Earth.

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