The weather forecast for Jupiter calls for clouds with a chance of lightning and "mushballs"—a slushy mix of ammonia and water encased in a hard water ice shell that rain down like hail here on Earth.

WASHINGTON — Scientists studying Jupiter's weather for nearly 40 years made some unexpected and slightly mysterious discoveries about how temperatures in the planet's different belts and zones ...

His models suggest that one in particular, HD 189733b — a Jupiter-sized planet 63 light-years away from Earth — may produce extreme weather. By using computer models and data from NASA's Spitzer Space ...

What do the clouds on Jupiter, dust storms on Mars and rainstorms on Titan all have in common? They look like they belong on Earth. As we venture through the universe, scientists are finding uncanny - ...