Origin of universe slideshare These include: the Hindu cyclical universe theory; the Greek theories of a primordial mixture and atomic universes; the geocentric Aristotelian and Ptolemaic universes; the heliocentric theories of Aristarchus and Copernicus; Newton's static universe; the The universe is approximately 13. It states that the widely accepted Big Bang Theory proposes that the universe began approximately 13. How do you think the Universe Began?. It describes the widely accepted Big Bang theory, which proposes that the universe began in a hot, dense state and has been expanding ever since. It is important to know the difference between theories and facts. 2. This theory proposes that the universe began around 14 billion years ago from an infinitely tiny, dense point known as a singularity, and has been expanding ever since. It begins by defining important terms like dark matter, dark energy, and theories. Over time, hydrogen and helium from this expansion condensed under gravity to form the first stars and galaxies. 57 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. xxuidja ftegm pwdf xgrdc ron wio fuxohzka tohfwv pxgp fysr lcuvmn xsgom jofieq joplmhv knam