I saw an interesting take on time this week; namely, that time is just another dimension, and just like the others, has no beginning.
Except for on a personal basis.
From the diagrams in the Penrose paper, he seems to be saying that time and the spacial dimensions existed before the "Big Bang"(always existed). That'll cause some to cough and wheeze.
His theory also states "... all particles will lose their mass towards the end of the universe". Wonder if he means that all particles will become photons whizzing around at the speed of light?
If, as science currently says, there was a singularity, then dimensions and time had a beginning. At least that’s what I thought I read. As I happen to believe in God, the Big Bang fits in nicely with that.