The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. It states that the universe was in a very high density state and then expanded. If the known laws of physics are extrapolated beyond where they are valid there is a singularity. Modern measurements place this moment at approximately 13.8 billion years ago, which is thus considered the age of the universe. After the initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies. More: en.wikipedia.org.

Yes No see voting resultssaving...
0 opinions, 0 replies
Add your opinion:
Preview:
(mouse over or touch to update)
Add your opinion
Challenge someone to answer this topic:
Invite an OpiWiki user:
OR
Invite your friend via email:
OR
Share it: