The Guinness Book of Records lists the largest snowflake at 15 inches across,

Newly fallen snow is usually about 90 - 95 percent air.

Snow is technically a mineral, like iron and salt.

At the centre of each snowflake is a speck of dust, volcanic ash or particle from outer space.

The snow in Antarctica is mostly so hard and flat that it reflects sound as well as light.

A blizzard with lightning is called thundersnow.