Water molecules freeze in a hexagonal pattern and the molecules are further apart than they were as liquid water. Water is unusual because its molecules move further apart when it freezes. The ...

In its natural state, common uranium (U-238 ... the Manhattan Project had made 20 tons of the precious liquid, more than enough to fill the first heavy-water nuclear reactor.

Earlier this week we broke down the complexities of mixed-phase precipitation forecasting.Within that we briefly touched on a key component to that complexity w ...

By heating or cooling a substance, its state can be changed. melting - the process of a solid turning into a liquid close liquidOne of the three states of matter. Liquids, like water or oil ...

Astronomers have discovered an exoplanet that might have favorable conditions for liquid water. This planet, HD 20794 d, belongs to the group known as super-Earths. It is located in a star system less ...

In its solid state (ice), it is actually less dense than ... Jupiter's moons Callisto and Europa appear to have a liquid water ocean underneath their surface, with a similar likelihood for Saturn ...

Planets in the box have the right atmospheric pressure and the right temperature to keep surface water in a liquid state. In our solar system Earth and Mars are in the box, Venus and Mercury outside.