Content overview: “NASA SPHEREx Telescope Finds Water and Methane in Brown Dwarf Atmospheres”. NASA's SPHEREx space telescope has delivered striking new evidence that brown dwarfs—enigmatic objects straddling the line between stars and planets—harbor chemically rich atmospheres. The findings, published in The Astrophysical Journal, reveal the presence of water and methane, molecules also common in the giant planets of our solar system like Jupiter and Saturn. SPHEREx, formally the Spectro-Photometer for the History of the universe, Epoch of Reionization, and ices Explorer, is designed to survey the entire sky in near-infrared light.
Its wide spectral coverage allows astronomers to dissect the faint light from these cool, dim objects and identify the telltale signatures of specific molecules. The detection of both water and methane suggests that brown dwarf atmospheres are dynamic and complex, with cloud decks and temperature profiles that may resemble those of gas giant exoplanets. This listing links straight to the original page, where the content is available in full.