Someone clearly slept through astronomy class! This is the Hertzsprung-Russell diagram - the fundamental chart showing how stars are classified based on their luminosity and temperature. But instead of learning about stellar evolution, they've labeled it like it's some kind of medical chart for stars with "mental illness" and "actual stars" circled randomly! 🤣
The H-R diagram is basically star Facebook - showing which stars are hot supergiants living their best life, which ones are stable main sequence stars just doing their thing, and which ones are cooling down into white dwarfs. But apparently someone thought this was about star psychology rather than astrophysics!