>Given that the gravity must have been immerse then how should we understand this time? We don't really know. There are speculative theories, but they don't al

>Given that the gravity must have been immerse then how should we understand this time? We don't really know. There are speculative theories, but they don't all agree. It's very difficult because the temperature would have been so hot at the very start that instead of four fundamental forces (of which gravity is one), we would have had only one. There's also the Hartle-Hawking State, which is a theory that proposes at the very "start" there simply was not time, only space, and that time coming into existence was part of the process that occurred during the planck epoch. There's also the Grand unification epoch, inflationary epoch, electroweak epoch, quark epoch, and hadron epoch that occurred in the universe before a second had passed, all with very different implications for how physics could have worked, so the answer would change multiple times during that period.