Keith Cooper is a freelance science journalist and editor in the United Kingdom, and has a degree in physics and astrophysics from the University of Manchester.
An illustration of the powerful storms and clouds of silicate found in the atmosphere of the brown dwarfs.The James Webb Space Telescope has discovered stormy weather in the sky of two brown dwarfs in the most detailed weather report yet from such"failed stars."— yet is also considered too massive to be a planet and thought to form like stars do .
The researchers found that both brown dwarfs are covered in tumultuous clouds, probably composed of silicate grains, sweltering in temperatures between 875 degrees Celsius and 1,026 degrees Celsius . In other words, hot sand is being blown in the winds of the brown dwarfs. The absorption signatures of carbon monoxide, methane and water vapor were also identified.
An artist's impression of the two brown dwarfs that form the WISE 1049AB system, with one of the brown dwarfs seen in the distance. Biller's team interpret the peaks at these wavelengths as indicating three different layers where there is a significant change in atmospheric pressure on each brown dwarf. There's a deep layer producing signals greater than 2.3 microns but less than 8.5 microns, an intermediate altitude layer absorbing light at between 2.3 and 4.
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