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Qmechanic
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Why is acceleration of expansion of space unexplained?

I didn't know how to better phrase the question so here we go.

It says that the farther we see from our galaxy the faster the other object seems to be going away (accelerating).

My common sense tells me to expect this due to following reason.

If space is expanding at every point equally then farther objects would naturally move away faster as there are more points of space between you and a far object than points of space between you and near object.

So as we move farther from an object the amount of space (say no of space points of length dx) increases hence there is more space expanding away from each other than for a near object and that is why far away object would appear to be accelerating.

But obviously its not that simple as i said or i may be completely wrong as scientists seem to consider this acceleration to non understood phenomenon like dark energy

So What am i missing here?

user1062760
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