Galaxy - A collection of stars, gas, and dust that is held together by gravity, Elliptical Galaxy, Irregular Galaxy, Spiral Galaxy, Nebula - Location where new stars are born, Comet - An icy space rock that orbits the Sun and has two tails, Asteroid - Small, rocky objects that orbit the Sun and can be small or large and are irregular in shape, Meteoroid - Space rocks, Meteor - When a meteoroid enters Earth's atmosphere, known as "shooting stars", Meteorite - When a meteoroid survives passing through Earth's atmosphere and lands on the surface, Planet - An object that orbits a star and large enough to have gravity, Star - A sphere of burning matter with a temperature great enough to cause nuclear reaction at its center,

Components of the Universe

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