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

The Earth's inner core, long considered a solid and stable sphere, may be quite different. A recent study suggests that its ...

Non-mixing layers of water and hydrocarbons thousands of miles deep could explain the icy planets’ strange magnetic fields.

A new study out this week said that the Earth's inner core is less solid than previously thought. Scientists still have questions, though.