[zinclozenge]

Why would dark energy be a hack? We know that the universe's expansion is accelerating. Since it's accelerating, and not expanding at a constant rate, that means there has to be something driving that. Dark energy is basically a "placeholder" term to describe the phenomenon.

[nitwit005]

> We know that the universe's expansion is accelerating.

That still seems to be a matter of serious dispute.

[Rury]

>We know that the universe's expansion is accelerating

Correction. We don't know this for fact. It's the prevailing theory fitting the phenomena we observe.