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In the Universe, a supercluster is a group of galaxies held together by gravity. Earth is located in the universe in the Virgo Supercluster of galaxies. Within a supercluster, there is a smaller group of galaxies called the Local Group. Earth is in the second-largest galaxy of the Local Group - a galaxy called the Milky Way.

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The Milky Way is a large spiral galaxy. Earth is located in one of the spiral arms of the Milky Way (called the Orion Arm) which lies about two-thirds of the way out from the center of the Galaxy. Here we are part of the Solar System - a group of eight planets, as well as numerous comets and asteroids, and dwarf planets that orbit the Sun. We are the third planet from the Sun in the Solar System.

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Earth's solar system is part of the Milky Way Galaxy, which is one of many galaxies in the Universe.  The planet Earth is a tiny part of a vast universe that has developed over a span of time beginning with a period of extreme and rapid expansion.

Earth's solar system consists of the Sun and other objects that are held in orbit around the Sun by its gravitational pull on them.  Motions within the Earth-Moon-Sun system have effects that can be observed on Earth.

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Planets differ by distance from the Sun, size, composition, atmosphere, Orbit around the Sun, and number of moons, among other aspects.

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The four innermost planets are referred to as terrestrial planets and have characteristics like liquid heavy-metal core, at least one moon, valleys, volcanoes, craters, made of rocky materials, solid surfaces, no rings, relatively small.

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The general structures of the jovian planets are opposite those of the terrestrial planets. The jovian planets have relatively small, dense cores surrounded by massive layers of gas. Made almost entirely of hydrogen and helium, do not have solid surfaces, have many moons, and rings.