Imagine looking out over a beautiful vista. The sun glances off the snowy peaks of distant mountains, a river winds through rolling hills. There is something wonderful about beholding the contours of a majestic landscape.
It might not be obvious when you look at the night sky, but the universe has a landscape of its own – filaments of galaxies separated by near-empty voids. We have long known this much. But now one group of cosmologists is taking things further and proposing that the universe possesses not just a landscape, but a timescape, too. The idea is that the very flow…
