It all depends upon which theory you follow. If there was only one big-bang then the energy was all there was in existence. No time, space or dimensions, without time it's not possible to make any measurements for how long it was around; it was there and nowhere, for a moment and forever. A concept beyond human comprehension. If there were multiple big-bangs, then the energy existed as matter which collapsed in on itself, i.e. The big-crunch. If the multi-dimension (M brane) theory is correct, then two 'branes came too close to each other and the collision contained enough energy to bring our Universe into existence.
I have read that time itself began with the big bang, so
there is no such thing as "before" the big bang.
I agree with you. I don' t understand it either.
That would be just before the Big Bang, for soon after some of the energy is converted to mass.
The Best of Big Bang
Unclear as there is no way to know what happened before the big bang, or even if there was a "before the big bang".
Within ten seconds of the start of the Big Bang, all hadrons and leptons that now reside in our Universe came into existence.
They formed early in the big bang before matter and energy decoupled.
It is quite clear, from observations, that the Universe is expanding, and that it started from a very hot and very dense start, currently called the "Big Bang". It is not quite clear where the energy came from; there are several speculations about this, but there is not much evidence about what happened before the Big Bang - or whether there even was a "before".
Energy and space and time all came into existence when the universe was created. It happened when the Big Bang happened 13.7 billion years ago. We have no scientific understanding of anything before the Big Bang.
There was no such thing as 'space' before the Big Bang. In fact, there was no such thing as 'before' before the Big Bang. Space and time both began with that event.
Both space and time were created by the expansion of the universe following the Big Bang. Before the Big Bang, there was no space or time. Now we have space and time, and we call the fabric in which the universe exists spacetime.
No. The big bang was before the dinos.
To be born then you would have had be born before the Big Bang. There was no "before" the Big Bang.
The big bang marks the beginning of the expansion of space-time from minute to enormous. It marks the beginning of time t = 0. I don't know of any discussion of energy needed for the 'banging' of the big bang. Since it marks the beginning of time it makes no sense for energy to be needed to start the Universe with a bang, for this energy would thus need to be around 'before' the beginning of time. Also, the big bang is technically not an explosion, but an ('explosive') expansion of great great great great great great magnitude. This however does not resolve whether energy need be supplied for a bang or for an expansion. The answer seems to lie in a technicality of time.