This site offers new information pertaining to the Big Bang Theory. The new idea that they are proposing is that inflation took place at less than a tiny fraction of a second during which space underwent an enormous expansion. During the past 13 billion years, space has been expanding but at increasing rates, that is, the Universe is accelerating. Most of this expansion is driven not by the mass in protons and neutron but by a cosmological constant and by mysterious, unknown dark matter. The site discusses how they came to these conclusions.