Answer: Celestial bodies
Notes: Researchers using the James Webb Space Telescope have studied the atmospheric conditions of brown dwarfs. These objects, larger than planets but smaller than stars, are between giant planets and small stars in size. They accumulate material like stars and have hot silicate cloud formations. Unlike stars, brown dwarfs cannot sustain nuclear fusion, which is why they are called "failed stars." They retain hydrogen and helium better than planets and have low metal content.
