Dust Shells from Sunrise Arc by Jack Hertz

Astronomers using the James Webb Space Telescope have identified two stars responsible for generating carbon-rich dust a mere 5,000 light-years away in our own Milky Way galaxy. As the massive stars in Wolf-Rayet 140 swing past one another on their elongated orbits, their winds collide and produce carbon-rich dust. For a few months every eight years, the stars form a new shell of dust that expands outward — and may eventually go on to become part of stars that form elsewhere in our galaxy.

https://webbtelescope.org/contents/news-releases/2025/news-2025-103

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