The physical process likely behind this cloud's formation has never been observed in a planetary atmosphere before.

Clouds need two essential ingredients to form, and both must be present simultaneously for the process to begin. There are two ingredients needed for clouds to form: water and nuclei. The first ...

Scientists have finally solved one of Mars's most perplexing mysteries: the puzzle of an 'impossible' giant cloud.

The Arsia Mons Elongated Cloud as seen by Mars Express. Credit: ESA. Every morning, for several months of the Martian year, ...

Scientists using the European Space Agency's Mars Express, in combination with a state-of-the-art meteorological model of the ...

It is widely accepted that water vapor forms clouds by heterogeneous nucleation (condensation on pre-existing dry nuclei).

Star formation unfolds within the cold, dense regions of molecular clouds, vast accumulations of gas and dust that permeate galactic discs. Turbulent motions and magnetic fields within these clouds ...

A study led by the EPFL suggests that shipping emissions influence climate-relevant cloud formation and may affect regional climate processes far beyond the polar region. Over the last few decades, ...

Penguin colonies across Antarctica are literally changing the weather—and it’s all about their droppings. New research reveals that ammonia from penguin guano creates massive hotspots of atmospheric ...