Astronomers discover first green star and the reddest star ever recorded

Researchers at the University of Warwick have identified white dwarf WD J1330+6435, the first star that appears green to the human eye, and WD J1011+2845, the reddest star ever recorded. The unusual colors stem from the extreme density of white dwarf atmospheres, where trace elements absorb parts of the spectrum.

• WD J1330+6435 lies 284 light-years away at 4000°C and appears green due to sodium
• WD J1011+2845, 48 light-years away, is the reddest star with a deep salmon-pink glow
• Only 5 of 151 white dwarfs within 65 light-years showed unusual colors
• Median color temperature of the sample was about 6800K, perceived as white