Experiments clear up confusion over the form of solid methane

Through a combination of high-pressure experiments and optical spectroscopy, physicists have revealed new insights into the ...

Direct imaging captures the crystalline vibrations of a supersolid made of atoms and light

The 20th century was marked by the discovery of exotic states of matter. First, liquid helium was observed to flow without friction at extremely low temperatures, a phase now known as superfluid. Soon ...