Scientists from France have described a type of cloud on Mars that forms without the presence of dust in the air. It is the Long Cloud of Arsia Mons, known by the acronym AMEC, a structure of water ice that reaches 1,800 kilometers in length. The responsible process is homogeneous nucleation, in which [...] The article AMEC Cloud of 1,800 km on Mars forms without dust in the atmosphere was originally published in Mix Vale.