Dark Energy and Dark Matter have been huge buzz words in the astronomical circles but now another dark idea is trying to gain traction. Dark Flow is an idea that is now backed by a three and five year study of the Wilkinson Microwave Anisotropy Probe (WMAP) survey of 1,000 galaxy clusters over a distance of 2.5 billion light years. Apparently, a section of the universe is moving with a much higher velocity than the rest of the universe. It is thought that this flow is being caused by the collision of our universe with a completely different universe that is not a product of the same Big Bang that caused ours. This collision is thought responsible for a 600-1,000 kilometer per second velocity difference that isn’t seen in other parts of the universe and since the cause is not proven, it is referred to as “Dark”. While this theory is not recognized because it simply hasn’t been studied enough to either confirm or deny its existence, future missions are going to look into this interesting phenomenon starting with the ESA Planck mission which should yield data in the first quarter of 2013.
Multiverse”, or area which contains many or infinite universes which could be like our own or completely different. Some of these universes could have formed in different “bubbles” which have the ability to interact with our own. It may also be possible that a universe could slowly break off from our own, forming another bubble universe from material that was part of our own universe. Most of these theories are almost impossible to test and even when tests are found to prove the existence of these universes, it is difficult to get a large percentage of scientists to agree without very precise data from many varying sources. The main reason for the need for more data is because this really is cutting edge science where there are many theories that do not have enough evidence to prove their theory beyond a shadow of a doubt.