Could you give me some theories and legends of how the Universe was born?

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Hi! I have this work about myths, legends and theories of how may the Universe and the world were born or made. Except the religious (About God) version and the Big Bang theory I kind of lack of knowledge. So could you give me some legends, myths and or theories about the Creation of the Universe and the world? It doesn't matter how old or how fiction is it. Thank you for your help!