... and are, like me, clouded out of the opportunity to get a daily does f Nova Cen, here's a SA100 spectrum of the Wolf-Rayet WN5 star EZ CMa. These huge stars generate an intense stellar wind, which continually blasts into space the by-product elements of hydrogen fusion - Nitrogen, Helium, Oxygen and Carbon. This cloud of elements is ionised by the intense emissions of the star, which accounts for the cocktail of emsision lines you can see.
