Extra terrestrial atmospheres can provide us with precious information about our own atmosphere, its history, its future.
Plasma is electrically charged (ionized) gas, a mixture of electrons and positive charged ions.
An inner part of the magnetosphere, doughnut-shaped region of charged particles (plasma) centred around the planet's equator.
A photon from the Sun can fragment an atmospheric particle or can eject electrons from these particles.
When temperatures fall below -80° C stratospheric particles turn into microscopic ice crystals that play an important role in ozone destruction.