Dark matter is an interesting thing in that while it is not known for certain that it even exists, most scientists agree that it does, and they therefore incorporate it into some of their research.

Deep beneath our feet, far below the crust and mantle, researchers now argue that matter behaves in a way that does not fit the familiar categories of solid or liquid. At the center of Earth, they say ...

Scientists have discovered that Earth’s inner core may not be fully solid. (Image: Canva) Earth's inner core may be superionic, behaving as both solid and liquid. Discovery explains slow earthquake ...