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Quiescent-Current Sheets Orbiting in Space (Download)

Jan. 9, 2023

Read this article online.

In the cold, dark void of space, we find an amazing phenomenon that’s made up of plasma. This is a charged gas made up of electrons and ions in which thin current sheets are separating large regions of plasma.

We all know the three states of matter: solid, liquid, and gas. However, most of us aren’t aware of another state known as plasma. Plasma actually occupies 99.9% of the observable universe.

If we could strip off electrons from an atom, the electrons become free. You’re now left with positive ions and free electrons—this is known as a plasma. A good example that we often see is the occurrence of a lightning discharge we can witness as a flash across the sky. The lightning flash is caused by an electrical current that’s heating the ordinary gas to a very high temperature. This enables a plasma column, which we can see glowing.