> ... the misconception really is pervasively widespread, even among first-tier astronomy graduate students ... Even first-year undergraduate astronomy student

> ... the misconception really is pervasively widespread, even among first-tier astronomy graduate students ... Even first-year undergraduate astronomy students dont't think a star "is a colour" considering the useful information when dealing withs come from spectra, not photos. Stellar classification on an H-R diagram is a convenience, that is all. It's already acknowledging "colour shift" from the Doppler effect (aka "red shifting"), but every first-year astronomy undergrad knows no two stellar spectra are the same, none are a single wavelength, and "white light" is a perceptual phenomenon not a physical one.