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Astronomers Find the First Known Green Star — Here’s Why It Looks Green

Astronomers led by Mark Hollands at the University of Warwick say WD J1330+6435 is the first known star that would appear green to human eyes. Newstro explains the white dwarf’s atmosphere, its sodium-rich rocky debris, and how measured...

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Astronomers Find the First Known Green Star — Here’s Why It Looks Green
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What happened

Astronomers led by Mark Hollands at the University of Warwick say WD J1330+6435 is the first known star that would appear green to human eyes. Newstro explains the white dwarf’s atmosphere, its sodium-rich rocky debris, and how measured spectra can be translated into perceived color.

This is a modeled human-eye color inferred from existing starlight data, not a close-up photograph or a star newly turning green. All stellar scenes are labeled illustrations; the colored spheres are simulations. The nearby sample of 151 white dwarfs contained five unusually colored stars — two yellow and three pink — with the green object discussed separately.

Every statement is attributed to the cited reporting. Visuals marked “file photo” or “illustrative” do not depict the events described unless stated.

The Newstro report

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Report breakdown

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Sources and credits

Reporting & references

Green and pink white dwarf illustrations: Mark A. Garlick / University of Warwick. The pink cutaway illustrates WDJ0902+2010, not the green star. Color-accurate simulated white dwarf panel and spectra: Mark Hollands / University of Warwick. Images sourced from the university press release linked above. Illustrative movement is an editorial pan/zoom; it does not depict measured stellar motion. Real stellar brightness cannot be reproduced on screen. Original Newstro graphics and AI-generated Kokoro Liam narration (am_liam). No AI-generated scientific imagery or fabricated telescope footage. English captions included.