A bullet-speed experiment reveals that the Earth's inner core may be softer and more dynamic than previously thought.

The Earth's inner core was once liquid, but has turned solid over time. As the Earth gradually cools, the inner core expands outwards at the surrounding iron-rich liquid "freezes." That said, it is ...

Scientists have discovered that Earth’s core is leaking into the mantle, and it’s raising some big questions. 🌍 The core, made mostly of iron and nickel, is supposed to stay locked away deep inside ...