The exoplanet HD 189733b, similar in size to Jupiter, has fascinated astronomers with its extreme conditions—searing temperatures, intense winds, and sideways rain composed of glass.

Recent data from the James Webb Space Telescope has unveiled another intriguing detail: the planet emits a scent reminiscent of rotten eggs.

Researchers detected trace amounts of hydrogen sulfide in its atmosphere, a gas known for its pungent sulfuric odor and never before observed beyond our solar system, CNN has reported.

This discovery expands our understanding of exoplanet compositions and was detailed in a study published in the journal Nature by a collaborative team from multiple institutions.

Written by B.C. Begley