IUPAC definition. polymerization: The process of converting a monomer or a mixture of monomers into a polymer. An example of alkene polymerization, in which each styrene monomer's double bond reforms as a single bond plus a bond to another styrene monomer.
There is evidence to indicate the Big Bang may have resulted from another, earlier universe collapsing in on itself, rather than from expanding from a point on infinitely hot and dense material. Instead, the universe appears to be going through constant phases of expansion (as it is at present) and contraction in a never-ending cycle. This theory of universe formation, known as the Big Bounce, was first proposed almost a century ago.
If from the vantage point of our Earth in the Milky Way galaxy, we look back and say that the beginning of the Universe started about 13.73 billion years ago. And if Hubbleâs 42 Law is correct, looking the other way, the universe is expanding at an accelerated rate of 42 miles per second per 3 million light years.