A shot of a supernova exploding.

SCIENCE & TECH: James Webb Space Telescope captures supernova start with explosion of cosmic dust

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NASA’s James Webb Space Telescope does it again – this time capturing the sights as a star starts to explode.

“The rare sight of a Wolf-Rayet star – among the most luminous, most massive, and most briefly detectable stars known – was one of the first observations made by NASA’s James Webb Space Telescope in June 2022,” NASA said in a statement. “Webb shows the star, WR 124, in unprecedented detail with its powerful infrared instruments.”

The Wolf-Rayet star is said to be 15,000 light-years away and located in the constellation Sagittarius.

“Only some of them go through a brief Wolf-Rayet phase before going supernova, making Webb’s detailed observations of this rare phase valuable to astronomers,” NASA said.

A supernova is the explosion of a star, and the largest explosion that takes place in space, the space agency said

This massive star is 30 times the sun’s mass and is said to have shed 10 suns’ worth of material. The gas ejected from WR 124 cools and then forms cosmic dust. The image captured by JWST shows the infrared light.


Wolf-Rayet stars are known to be efficient dust producers, and the Mid-Infrared Instrument on NASA’s James Webb Space Telescope shows this to great effect.
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Astronomers said that this cosmic dust is essential as it shelters forming stars, gathers together to help form planets, and serves as a platform for molecules to form and clump together.

“Webb opens up new possibilities for studying details in cosmic dust, which is best observed in infrared wavelengths of light,” NASA said. “Webb’s Near-Infrared Camera (NIRCam) balances the brightness of WR 124’s stellar core and the knotty details in the fainter surrounding gas. The telescope’s Mid-Infrared Instrument (MIRI) reveals the clumpy structure of the gas and dust nebula of the ejected material now surrounding the star.”

This JWST image will help astronomers continue to understand a crucial period in the universe’s early history.

“Webb’s detailed image of WR 124 preserves forever a brief, turbulent time of transformation, and promises future discoveries that will reveal the long-shrouded mysteries of cosmic dust,” scientists said.



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