What is the universe expanding into if it’s already infinite? – Mael, age 10, Missoula, Montana When you bake a loaf of bread or a batch of muffins, you put the dough into a pan. As the dough ...

The universe is expanding faster than predicted by theoretical models, and faster than can be explained by our current understanding of physics. "The tension now turns into a crisis," said Dan ...

This classification served to build a balance; making the universe expand ... does matter assume inside large black holes? In clear and lively prose, Tonelli takes readers on an exhilarating ...