A controversial new paper argues that universes with dark energy profiles like ours do not exist in the “landscape” of universes allowed by string theory. On June 25, Timm Wrase awoke in Vienna and ...

What is the stuff in the universe made of? Our high-school physics tells us atoms, with 90 natural elements building the world around us. But what are these atoms made of? Over the last century, we've ...

explores the idea of wormholes, tube-like tunnels through the fabric of space. relates how string theory resolves the conflict between a spatial fabric that can deform but not tear (as described by ...