* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
Earth, Moon and Our Solar System Vocabulary Sun The star at the center of the solar system. Solar System A star and all the planets and other objects that revolve around it. Star A huge ball of very hot gases in space. Planet A large body that revolves around a star. Revolution The act of traveling in a closed path. Rotation To spin around an axis. Axis An imaginary line that runs through the center of Earth from the North Pole to the South Pole. Optical Telescope An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum. Phase One of the shapes the moon seems to have as it orbits Earth. Seasons One of the four natural divisions of the year, spring, summer, fall, and winter. Hemisphere The division of Earth into two sphere’s: the Northern Hemisphere and the Southern Hemisphere. Cyclical Recurring in cycles or periods of time. Satellite Man-made equipment that orbits around the earth or the moon. Orbit The path of one object in space around another object. Constellations A pattern of stars that form an imaginary picture or design in the sky.