Earth's Place in the Universe
What is the Universe?
What are the predictable patterns caused by Earth's movement in the Solar System?
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.