“Green, Pink and Purple: Astronomers Reveal Surprising True Colors of White Dwarf Stars” — what this page in the network covers. Astronomers at the University of Warwick have discovered that white dwarf stars, the dense remnants of Sun-like stars, can glow in a surprising palette of colors—including green, pink, and purple. The team identified the first white dwarf that would appear green to the human eye, a finding that challenges the common assumption that these stellar corpses are simply white or blue.
The colors arise from the scattering of light by particles in the stars' atmospheres, a process similar to what makes Earth's sky blue and sunsets red. This discovery matters because white dwarfs are used as cosmic clocks to date stellar populations, and understanding their true colors improves age estimates for galaxies and the universe. For the complete material, the listing points back to the source inside the network.