[Zhukov]

I think that in at least one, if not all, Big Bang Theories cite the creation of the Universe at 15 Billion years ago. If the universe was created 15 billion years ago, as the model predicts, there has simply not been enough time for the matter we observe to have congealed into galaxies like the Milky Way, without the help of invisible "dark matter."

"Dark Matter" is exactly what you thought it was.

"According to the big bang cosmologists, in order for galaxies to have been formed from the big bang, there must have been sufficient matter in the universe to bring about an eventual halt to its expansion through the law of gravitation. This would mean a density of approximately ten atoms per cubic metre of space. In reality, the amount of matter present in the observable universe is about one atom per ten cubic metres—a hundred times less than the amount predicted by the theory."



I also have a query: Did the Big Bang send everything flying out in all directions equaly? Was it like a rock dropped into a body of water that sent ripples out in equal directions?