HD 189733b is an exoplanet located about 64 light-years away from Earth in the constellation Vulpecula. It orbits a star similar to our Sun and is classified as a "hot Jupiter" due to its large size and close proximity to its star. This planet has extreme weather conditions, with winds reaching speeds of up to 5,400 miles per hour. Its atmosphere contains clouds of silicate, which can create glass rain, making it one of the most studied exoplanets in terms of atmospheric science.