GoKawiilStudy finds some white dwarfs glow pink, green or purple, not just white
A study published in RAS Techniques and Instruments reports that some white dwarfs display pink, green and purple hues rather than the white-to-blue colors long associated with the stellar class. Researchers attribute the unusual colors to extremely dense atmospheres—comparable to water's density and roughly a million times denser than the sun's—in which trace elements like carbon, calcium and sodium interact with helium plasma to absorb light across a broader spectrum. The study also notes that debris from shattered planets and asteroids pulled into a dying star's atmosphere can contribute these elements.