Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain forever unknown.

There was no meaning to it. Yet, now there is plenty of meaning–at least to us, in the sense that we use the term: significance. So, where did all this meaning come from? How did meaning enter a ...

What is dark energy? Why does dark energy seem to be weakening? Is our universe part of a larger multiverse? What lies beyond the boundary of a black hole? The universe seems to be rotating, and if ...

An analysis has produced the most precise summation to date of the universe’s dark energy and dark matter contents. Reading time 3 minutes A new analysis of more than 1,500 supernovae has put fresh ...