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?

My lay reading of the OP’s paper is that the universe is, in fact, braking for somebody.

we passed then. we're at now now. I thought this was settled

wait, I missed it?

Recent years, probably because of large data centers /s