Scientists Crushed Water Between Two Diamonds And Saw Something Never Observed in a Lab Before.

Researchers at the University of Nevada, Las Vegas compressed water to 222 gigapascals (2.2 million times Earth's atmospheric pressure) between diamond tips and observed for the first time in the lab that water's crystal structure becomes asymmetrical and warped rather than more compact, with implications for understanding planetary interiors.

The experiment replicated pressure but not temperature conditions of other planets. Further study is needed to confirm this may represent a previously unknown form of ice.