Metallicity Memes

The astronomical audacity of astrophysicists! In stellar classification, they casually lump nearly every element on the periodic table as "metals" - including non-metals like oxygen, carbon, and nitrogen. To an astrophysicist, if it's not hydrogen or helium (the two most abundant elements in the universe), it's just a "metal." Meanwhile, chemists are having collective aneurysms because oxygen is actually a highly reactive non-metal that would corrode actual metals faster than a freshman's confidence during finals week. The cosmic irony of calling oxygen a metal is like calling a fish a land mammal because "it's not a bird."