Astronomers from the University of Warwick have identified a white dwarf, WD J1330+6435, which would appear green to the human eye. The object is located approximately 280 light-years away from Earth in the constellation Draco.
The unique coloration is caused by the star's atmosphere, which has been contaminated by material from orbiting bodies. High-density interactions between sodium and helium atoms, combined with calcium absorption, shift the star's peak emission to approximately 500 nanometers.
White dwarfs are dense remnants of stars that have exhausted their nuclear fuel. While they are not visible to the naked eye, studying their spectra allows researchers to analyze the composition and evolution of distant planetary systems.
