Repulsive gravity at the quantum scale would have flattened out inhomogeneities in the early universe First light The cosmic microwave background, as imaged by the European Space Agency’s Planck ...

It’s time we talked about loop quantum gravity. What exactly is it? What are the loops? And can it really defeat string theory in our quest for a Theory of Everything? PBS Space Time is available to ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. In my early 20s, I worked at three different music venues as ...