Heres a nice link for the Twin Paradox. The twin who traveled returns younger than the one who didnt. On the Big Bang and the Swartzchild radius, heres a nice discussion of Symmetry Principles of the Unified Field Theory.
As for me, however, I tend to a higher dimensional dynamic solution such as this one: Space-Time-Matter Consortium
We are a group of physicists and astronomers working on a 5-dimensional version of general relativity. Our work differs from Kaluza-Klein theory (the basis of superstrings) in that we do not assume compactification of the extra dimension. This means that new terms (those involving the 5th coordinate) enter into physics, even at low energies. In 4D spacetime these can be interpreted as matter and energy. We move them to the right-hand side of the 4D field equations and take them to describe an induced energy-momentum tensor. In fact, we have shown that no 5D energy-momentum tensor is required. 4D matter of all kinds can arise as a manifestation of a higher-dimensional vacuum. This is one way to realize Einstein's dream of transmuting the "base wood" of matter into the "pure marble" of geometry -- that is, of unifying the gravitational field, not just with other fields, but with its source as well.
For a thorough discussion of the theory click here
It has been exciting for me to watch them develop this theory over the past few years. I now tend to visualize the observed realm at 4 coordinates as an unfortunate selection of coordinates from a higher dimensional dynamic. Under their theory, the big bang itself, could be a higher dimensional shock wave. Here's more on how the theory holds with regard to:
Astrophysics
Cosomology
Particle Physics
"Out of the box" thinking has a great appeal to me. Perhaps it might to you, also!