There are three naturally-occurring states of matter on the Earth: solids, liquids, and gasses. There is a fourth state of matter in the universe, however, it can only be created in a lab on Earth. This state of matter is plasma.
It is actually the most common state and two great examples of it would be lightning and the sun. To create plasma in the lab, scientists have to place a gas in an electromagnetic field or heat it to a specific temperature.
Plasma is one of the four core states of matter. A plasma has properties unlike those of the other state. A plasma can be made by heating a gas or exposing it to a strong electromagnetic field activated with a laser or microwave generator.
Plasma does not exist without restraint on the earth under regular conditions. Plasma can be forcibly generated by heating or by subjecting a neutral gas to a strong electromagnetic field to the point an ionized gaseous substance becomes increasingly electronically conductive. Plasma is the mostly associated with the stars.