Using ultracold temperatures and some steel ball bearings, scientists have created a brand-new, bizarre form of ice that has the same density as liquid water.

"Ice in the rest of the universe has long been considered a snapshot of liquid water – that is, a disordered arrangement ...

The density, however, did not match the already known high- and low-density amorphous ices. Intriguingly, it fell in between; indeed, it was almost exactly the same density as liquid water.