Scientists and amateur astronomers have teamed up to upend a long-held assumption that Jupiter's iconic swirling clouds are made of frozen ammonia — a pretty foundational revelation about the ...

This striking astronaut photo shows one of Russia's deepest lakes sandwiched between two halves of a volcano as its surface was transformed into a reflective sea of swirling clouds thanks to a ...

Lightning also can take on a range of colors, depending on conditions in the clouds and in the air. Typically, blue lightning within a cloud indicates the presence of hail. Red lightning within a ...