PARAUNIVERSE
(Telescopic images of our galaxy taken by Hubble, Spitzer and Chandra Space Telescopes in 2009 and stitched together)
Parauniverse is an alternate universe or alternate reality, a hypothetical self-contained plane of existence, co-existing with one's own. Science say parauniverse is a set of multiple universe. It is also said to be an interpretation of quantum physics. In philosophy it is a logical possibility, a possible world as real as ours.
While some scientists believe that there is just another universe like ours, some others believe the possibility of infinite number of universes, which they call parallel universes. Those can be branches of ours or we can be a branch of another. Eminent scientists like Martin Rees, Alan Guth and Max Tegmark have taken it to be evidence that we live in a multi universe, that our universe is just one of a huge, perhaps infinite, ensemble of worlds. In our day to day life we realise that we live in a three dimensional univers. We can consider time as an additional fourth dimension, as revealed by Einstein. However, it is also believed that when we live in 7th or 8th or even more dimensions our reach shall vary accordingly. We may think about other universe of other dimension. We may imagine about a life form as big as man made of different air particles that can communicate through other medium in other wave length. And also try to imagine, that such life forms can travel at a speed that of light.
There are a few ways the universe might end. It depends on how the rate of cosmic expansion changes in the future. If gravity overpowers expansion the cosmos will collapse in a Big Crunch. If it continues to expand indefinitely it will lead to a Big Freeze. Then comes the question, where the universe ends. If the universe exists in all of space and time, then there cannot be anything outside the universe. We also had tried to measure it. The measurement is that 46 billion light years on every direction from where we are. It is also believed that it is 13.8 billion years old.
(Indebted to many web sources)
K V George
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