muppet
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With the proviso that I've not take any formal courses in this area:
The expansion of the universe is not like a bomb exploding, where some large number of particles is statistically driven to occupy a larger volume than it previously had by a sudden increase in both the number of particles and the kinetic energy; The galaxies are not particles bouncing off the walls of the universe
Instead, it's thought to be something more fundamental than that: space itself is expanding, in the same sort of way (??) as space can bend, or do similarly strange things, as is understood from relativity. Google "Friedmann equations". Alternatively, I'd hazard a guess that searching for "expansion of the universe" in the cosmology forum would yield about as many results as searching for "double slit" would yield here...
The expansion of the universe is not like a bomb exploding, where some large number of particles is statistically driven to occupy a larger volume than it previously had by a sudden increase in both the number of particles and the kinetic energy; The galaxies are not particles bouncing off the walls of the universe
Instead, it's thought to be something more fundamental than that: space itself is expanding, in the same sort of way (??) as space can bend, or do similarly strange things, as is understood from relativity. Google "Friedmann equations". Alternatively, I'd hazard a guess that searching for "expansion of the universe" in the cosmology forum would yield about as many results as searching for "double slit" would yield here...