High-pressure experiments generated the first direct observation of plastic ice, which has qualities of both crystalline ice and liquid water.

Snow is made up of trillions of tiny ice crystals to make snowflakes, with not one alike. Here's how they form.

Each water molecule can donate two of these bonds—one from each hydrogen atom—and accept two of them from other, neighboring molecules. Unlike in ice, these bonds are broken and re-formed on ...

A snowflake’s ice crystals are symmetrical due to the lattice structure formed along and between water’s hydrogen bonds, leading to a hexagonal (six-sided) shape. As the ice crystal tumbles ...

Scientists had previously theorized that Mars was able to hold on to its liquid water without it freezing despite its distance from the sun thanks to an excess of hydrogen in its atmosphere.