Probably it means that now we have evidence that… it is a colloquialism
Edit: yep, The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously thought, a new study suggests.
Going by the second graph, since about 2.5 billion years ago.
What happened to then?
we passed then. we're at now now. I thought this was settled
wait, I missed it?
My lay reading of the OP’s paper is that the universe is, in fact, braking for somebody.
Recent years, probably because of large data centers /s