The Big Bang involved the expansion of space-time. There was no center; every point in space moved apart. This explains why galaxies appear to recede uniformly in all directions. The event also created time itself. Conceptualizing it as an explosion in space is misleading. Modern cosmology frames it as space stretching rather than matter flying outward. This distinction is crucial for understanding the universe’s evolution.
It matters because it corrects a common misconception about the universe’s origin.
It also provides a more accurate framework for understanding cosmic expansion and structure formation.
The Big Bang created space and time, not just an explosion in space.
Caltech [caltech.edu]