Gases near a dying star in the Helix Nebula. This nebula is located in the Aquarius constellation. Each knot of gas is several billion miles across. Credit: C. Robert O'Dell and Kerry P. Handron [Rice University], NASA.
Plasma Ball Physics
A plasma ball is fun, but plasmas are an important part of our physical universe. From lightning to stars to the Northern Lights, plasmas are all around us.