Is there a parallel universe with another Earth or aliens?

In the last decade, cosmologists have claimed that the expanding universe we see around us may not be the only one; and that billions of other "universes" are out there. I will already answer the second part of your question: there will not be "aliens" on them - "we" will be there! read more

I will already answer the second part of your question: there will not be "aliens" on them - "we" will be there! According to the theory, all the universes will be replicas of the universe we know of. read more

There are 10^90 particles in each Universe, and we need for all of them to have the exact same history of interactions for 13.8 billion years to give us a Universe identical to our own, so that when we choose one path over another, both Universes still wind up existing. read more

The idea of parallel universes in quantum mechanics has been around since 1957,' said Howard Wiseman, a professor in Physics at Griffith University. 'In the well-known 'Many-Worlds Interpretation'', each universe branches into a bunch of new universes every time a quantum measurement is made. read more

There is no proof that there is any parallel universe. There are some theories which talk of multiple dimensions which can be justified by parallel universe however most likely these theories are not correct. Since there are no parallel universe that we know of so no alien life on those universe. read more

If physics conspires just right, there might be an infinite number of parallel Universes out there. But we need some help. read more