Why is the universe expanding at an ever-increasing rate? This is one of the most exciting yet unresolved questions in modern ...

In physics, the evolution of the universe has so far been described by the general theory of relativity and the so-called Friedmann equations. However, in order to explain the observed expansion of ...

“The Copernican principle is a cornerstone of most of astronomy, it is assumed without question, and plays an important role ...

When high-energy radiation interacts with water in living organisms, it generates particles and slow-moving electrons that ...