Question

How do you observe atomic gas, ionized gas, ongoing star formation, and accelerated charged particles?

Answer 1

Atomic gas - A pure atomic gas may be made up of individual atoms (e.g. a noble gas like neon).There is no charge on atomic gas.

Ionized gas - Also known as plasma.Plasma is loosely described as an electrically neutral medium of unbound positive and negative particles (i.e. the overall charge of a plasma is roughly zero). It is important to note that although they are unbound, these particles are not ‘free’ in the sense of not experiencing forces. When the charges move, they generate electric currents with magnetic fields, and as a result, they are affected by each other’s fields. This governs their collective behavior with many degrees of freedom.

Ongoing Star Formation -Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse to form stars.

accelerated charged particles- If a particle has a constant acceleration, a˙=0, then there is no reaction force acting on it. Therefore the particle does not lose energy.