The universe may have inflated from the size of a mote of dust to the size of today's observable universe, all during the first few moments of the Big Bang.
Personally, I don't like the term 'inflation' because to me it implies movement, making me erroneously, so many times in the past, wonder how anything could go faster than the speed of light. I'm not a physicist, but I like to think what really happened during the first few moments of the Big Bang was that space itself was actually being created everywhere at a tremendous rate -- including between all the bits of debris in the Big Bang, thereby increasing the distance between those bits (if I'm wrong on this point would some physicist please chime in and correct me? thx).
The expansion continues to this day, but not as rapidly (though it is accelerating).
You can read a little about inflation here.
And one last clue: every 'thing' composed of atoms is therefore composed of a pinch of space, a grain of time, and energy, all expressed as a wave function; but that wave function is non-distinct until the function collapses to be expressed in 'linear' temporal expression. Before collapse the wave function is a volumetric expression of time. That's where the notion of quantum non-locality arises.
IIRC, it was DeBroglie who told the Copenhagen gaggle that everything these is is an expression of wave function.
And one last clue: every 'thing' composed of atoms is therefore composed of a pinch of space, a grain of time, and energy, all expressed as a wave function; but that wave function is non-distinct until the function collapses to be expressed in 'linear' temporal expression. Before collapse the wave function is a volumetric expression of time. That's where the notion of quantum non-locality arises.
IIRC, it was DeBroglie who told the Copenhagen gaggle that everything there is is an expression of wave function.