Robert sent in the link … www.esa.int/Science_Exploration/Space_Science/Mars_Express/Mars_Express_… … and the full paper is at https://arxiv.org/abs/2103.03919 [which is the abstract but when there click on the pdf] … the discovery of a curious cloud formation which forms around a Martian Vlocano. The explanation given is moist air, on the dry planet. Robert suggests an electrical cause, reminiscent of Martian Dust Devils.
Curious Cloud
21 March 2021Astronomy