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All terms in this list:
Big Bang: a theory of an explosion the explains how our universe begin
star: gravity pulls in gases hydrogen and helium,moves so fast they make nuclear reactions;LIGHT
nebula: A cloud in outer space consisting of gas or dust (e.g. a cloud formed after a star explodes).
Milky Way: The galaxy in which Earth is located one
of 10 billion in the universe
galaxies: group of over 200 billion stars,there are
10 billion galaxies
astronomy: The study of the physical universe beyond the Earth's atmosphere, including the process of mapping locations and properties of the matter and radiation in the universe.
Earth: The third planet in order from the Sun, upon which humans live. Represented in astronomy and astrology by ♁ and ⊕.