The Universe, truly, is full of wonders, and the James Webb Space Telescope has just given us our best views of one of them yet.
Wolf-Rayet stars are very hot, very luminous, and very old; at the end of their main-sequence lifespan. They are significantly depleted in hydrogen, rich in nitrogen or carbon, and losing mass at a very high rate.
When the two stars enter periastron – a distance about a third greater than the distance between Earth and the Sun – they become close enough that their powerful winds collide. The dust is then blown outward by the stellar wind, resulting in the expansion of the partial dust shells. They expand and cool as they are blown outward, losing heat and density.
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