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astronomer a scientist who studies the universe beyond the earth.
astronomy the branch of science that studies the universe beyond the earth.
atom the smallest possible unit of a chemical element. The major parts of atoms contain protons, neutrons, and electrons. They are the basis of all matter in the universe. [1/2 definitions]
cosmic of or relating to the universe.
cosmos the universe considered as a whole.
creation the universe or the creatures in it. [1/3 definitions]
god (capitalized) the supreme being that is worshipped by Christians, Jews, and Muslims as the maker and ruler of the universe. [1/2 definitions]
gravity the force by which all objects in the universe are attracted to each other. [1/2 definitions]
hydrogen a very light gas that burns easily and is one of the chemical elements. Hydrogen is the most abundant element in the universe. It combines with oxygen to make water, and it is found in all living things. Hydrogen combines with many substances and has many uses. (symbol: H)
religion a set of beliefs about how the universe was made and what its purpose is. Religion usually involves worship of a god or gods, and the belief in certain ideas about right and wrong behavior. [1/3 definitions]
space the area that contains the entire universe beyond the earth; outer space. [1/7 definitions]
world the universe; everything that exists. [1/6 definitions]