Several questions that have been asked. There are no simple answers but we know much more about the cosmos than say ten years ago and dramatically much more than from 100 years since the formulation of general relativity and quantum field theory. The idea for multiverse is pretty unique. In string theory or now M-theory, the extra dimension space is describe by particular geometry known as Calabi Yau manifolds. And now we know that there could be several Calabi Yaus which is known as a vacua problem. This leads to the problem of uniqueness, which asks what makes the universe unique. The answer to these questions are difficult which has lead to even respected people resorting a nonsense theories that leads the rich fundamental theories of nature to darknes of metahysis. The questions are important but the answers so far is far rom satisfactory. For instance the constants in nature that appears in physical theories such as fine structure constants, charge of the electron,mass of hadrons, Gravitational constants and so on. If these constants were modified slightly the universe that we know will collapse.This question by itself is reasonable but the recent approach have been preposterous. Shape of the Universe The truth is it could be anything. It could be spherical, cylindrical, torus ( shape of the donut) , mobius strip. The bounded universe would be a really cool one becuase the light(electromagnetic waves) would travel around which may give us mulptiple images of an event. For instance you could see yourelf if you live suficently long if the universe wa a torus. The other thats possible is universe is an infinite branes seperated by what is known as an orbifold. Right now we have some beautiful ideas on the universe that are consistent logically.However there are problems that seem intractable for the time. Ultimately, experiments and evidence will tell us exactly what the shape of the universe. However, we strongly feel that universe is hmogeneous and isotropic. Universe is homogeneous I am not going to explain the technical detail but there are things that restrict the shape of the universe. Homogeneity means that earth anything else does not occupy a privilaged place in the universe as the ancients once believe. This is ofcourse at a very large scale as that doesnt mean that New York or Earth or milkyway.Evidence suggests that universe is homogeneous and isotropic in largescale I wish I could write more. I have to leave and save at least some of you from clinical depression of living in this cosmic drama. Also the purpose of this post is to inform and not to indulge in a secular discussion of science in a public forum.