Hi, I asked myself, what would time dilation look like in the first moments of the universe, close to the big bang? There, enormous mass densities and enormous gravitation must dilate time to the extreme? There, the general formula given in your HyperPhysics course will no longer hold, since the square root term becomes negative...
p.s: I used the sanford gravity calculator for calculating gravity between two masses, each 10^20kg, at distance of 1 angstrom.
http://www.wsanford.com/~wsanford/calculators/gravity-calculator.html

Question

Hi, I asked myself, what would time dilation look like in the first moments of the universe, close to the big bang? There, enormous mass densities and enormous gravitation must dilate time to the extreme? There, the general formula given in your HyperPhysics course will no longer hold, since the square root term becomes negative...
p.s: I used the sanford gravity calculator for calculating gravity between two masses, each 10^20kg, at distance of 1 angstrom. 
http://www.wsanford.com/~wsanford/calculators/gravity-calculator.html