One of the most startling scientific discoveries of recent decades is that physics appears to be fine-tuned for life. This means that for life to be possible, certain numbers in physics had to fall ...

Look out at the Universe all you want, with arbitrarily powerful technology, and you'll never find an edge. Space goes on as far as we can see, and everywhere we look we see the same things: matter ...

WHAT would you rather believe in, God or the multiverse? It sounds like an instance of cosmic apples and oranges, but increasingly we are being told it’s a choice we must make. Take the dialogue ...

Do we live in a multiverse? Daydreamers and science-fiction authors have pondered parallel universes for as long as scientists have described our own. Our universe contains everything we know — from ...

Like many of her colleagues, Hiranya Peiris, a cosmologist at University College London, once largely dismissed the notion that our universe might be only one of many in a vast multiverse. It was ...

Is there evidence for the existence of an enormous number of other universes? In 1987, Steven Weinberg wrote a cute little paper entitled “Anthropic Bound on the Cosmological Constant”. Weinberg was ...