Douglas Adams told us the answer to life, the universe and everything is 42. If only cosmology were so straightforward. Astronomers have been arguing for years about a number every bit as fundamental, ...

Deep under the Mediterranean, scientists have recorded the highest-energy neutrino ever detected. Now they are working out what this elusive particle could reveal about the universe we live in. By ...

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...