I have been trying to gather some universe related info ... kinda for procedural content generation experiments.
My problem is ... I don't get it. When reading about galaxies and how they use distance to measure the age ...
there must be something that I am missing or thinking about the wrong way.
The universe is expanding ... all galaxies are moving away from each other.
They are not moving away from a certain point, though ... or some galaxies would move away from us faster than others.
Is that something that people should simply not try to wrap their head around, or is there a better way to think about it than comparing it to an explosion (... which has things moving away from a center)?
I guess I need to move from thinking in 3 Dimensions to 4 Dimensions ... but I tried that and it still seems to me as if the way we look at galaxies in the distance implies that earth is at the center.
Is thinking in 3D wrong in general, for some reason?
Any thoughts or ideas? I hate feeling stupid ;-)