The conversation between human and AI assistant.
Is the reaction in the Universe which causes dark energy the outflow of a Universal black hole, causing the galxy clusters to accelerate away from us?
That's fascinating. But I'm curious - how do scientists even detect dark energy? It's supposed to be invisible, right?
That's correct. Scientists have inferred the existence of dark energy through observations of the accelerating expansion of the universe. They noticed that distant supernovae were dimmer than expected, which suggested that the expansion of the universe was accelerating at a faster and faster rate.