"Starry, Starry Night" explained

I was going to introduce this music video by saying "I was today years old when I learned..." but I've recently realized that idiom is not understood or well received by readers here, so instead I'll just say... Today in 2026 I learned that the lyrics of this old (1971) song refer to the life and works of Vincent Van Gogh. How did I go 50+ years without knowing this?? I can only surmise that it's…