This article needed some better editing: First, the word NOT, was left out of this sentence: "But both of these views of space-time can be correct at the same time." Second, if someone is looking back 18 BILLION light years, we just found our next nobel prize winner. Ummm...NO, no one is looking back over 4 billion years before the big bang. And this isn't just a trite error, if the distance is 1.8 billion light years, then maybe looking back deeper would allow us to see the proposed frothiness. But if they are looking back 8 billion, probably are going to have to come up with another way to test this hypothesis. But in any event, NO ONE has looked back 18 billion light years.