Researchers have determined how hydrogen molecules are packed at extremely high pressures. Their work solves the long-standing mystery of the structure of the dense form of hydrogen, called phase IV.
A new technique involving pulses of ultrafast, high-power lasers has allowed scientists to see how silicon, an abundant element in Earth's crust, changes under intense pressure.
Mysterious patches on the planet’s core that dampen seismic waves could be the result of ancient seawater chemically reacting with iron under extreme conditions.
