To understand how fluids behave under extreme conditions, such as those found inside planets, the researchers squeezed super-hot liquids between diamonds.
Physicists have struggled to track how the density of liquids changes under extreme temperatures and pressures, but to overcome this challenge, John Proctor and his colleagues at the University of Salford in the UK have used diamonds and lasers.
The researchers compressed several liquids, including water, methane, and ethane…