Early Earth may have reached a sweet spot when cooler crust and widespread hydrothermal systems gave fragile prebiotic chemistry time to persist.

Dark energy remains among the greatest puzzles in our understanding of the cosmos. In the standard model of cosmology called the Lambda-CDM, it is accounted for by adding a cosmological constant term ...

Physicists have long been fascinated by the strange behavior of matter at a second-order phase transition, the razor-thin ...