Studying the atmospheres of other planets has produced many surprises. It could even help in comprehending that of the Earth. Take for example, the latest image of Neptune, presented at a meeting of the American Astronomical Society's division of planetary science this month. The weather on Neptune is, in the language of the weathermen, rather blustery. Wind speeds can reach 1,400 kph and monster storms frequently appear as huge, dark spots on the planet's bluish surface.