Just as snow crystals form in the upper atmosphere, then fall to lower, warmer elevations and melt, scientists believe a phenomenon called iron snow happens in the molten iron cores of some planetary ...

Add Yahoo as a preferred source to see more of our stories on Google. Some parts of the U.S. see well over 100 inches (2.5 meters) of snow per year. Edoardo Frola/Moment Open via Getty Images The ...

Every winter storm drops billions of ice crystals, each one shaped by a unique path through shifting temperatures and ...

It's an incredible and very ordered formation as snow crystals form hexagonal or six-sided shapes. It's a shape which extends all the way down to the two hydrogen atoms that join with an oxygen atom ...

The largest snow crystal ever measured was 10 millimetres across, discovered by Kenneth Libbrecht, who photographed the record-breaker in Ontario, Canada, in December 2003. Libbrecht is a professor at ...