ice particles

Scientists have just discovered a place that may contain evidence of alien life that can easily be captured by human spacecraft.

Water is a transparent colorless compound; Ice particles are colorless and transparent. Snow is made up of countless tiny ice particles, so why is snow white?

A plasma physicist from the California Institute of Technology (Caltech) finally found the answer to the strange characteristics of noctilucent clouds, ending decades of mystery.

The glowing nocturnal clouds at night often appear in the extreme recently observed further south, to the United States.