The link below will give you a PDF copy of the derivation of the basic formulas for the Multidimensional Geometric Expansion Model. It is 1,700 kilobytes, about 150 pages, so it will take a while, but it is worth it if you like physics formulas. Also an amazing number of issues in astronomy are resolved.
A good high school student with just an introduction to Calculus can follow all the derivations and over 95 percent of the derivations can be followed with just a good foundation in Algebra.
(What? no tensor analysis?, must be wrong. Too simple to be true. )
(Prove me wrong. A careful review will show that the local relationships of General Relativity have not been altered. )