Astronomers identify the first known green star

Updated 2026-10-18 · told from many outlets at once

A green star named WD J1330+6435 was discovered in the Milky Way, 280 light-years from Earth. It is a white dwarf with a temperature of 4,000 degrees Celsius, likely formed from rocky debris ingested by the star.

• Astronomers discovered a white dwarf star named WD J1330+6435 that appears green.
• White dwarfs are roughly Earth-sized but can have masses up to 165,000 times that of Earth.
• Researchers studied 151 white dwarfs near Earth.
• Astrophysicist Mark Hollands stated planetary material enriched the white dwarf's outer layers.
• The white dwarf WD J1330+6435 has a temperature of about 4,000 degrees Celsius.
• The white dwarf WD J1330+6435 is in the Milky Way and located about 280 light-years from Earth.
• White dwarfs can acquire unusual colors due to contamination or internal processes, and cooler ones show more atmospheric effects.

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