Dust and oddities

A piece of Mars: In the dustier regions of Mars, there are many small dark streaks on steep slopes that we don’t understand well. Because we don’t know much about them we call them “slope streaks”, which is not the most imaginative name. They are actively forming on Mars today, though, and seem to be triggered by a disturbance like a nearby earth(mars)quake or a strong wind. Over the next several decades they slowly fade away. (HiRISE ESP_014394_2045)