Mars Express Captures 'Metallic' Waves Rolling Across an Ancient Martian Crater

When we think of Mars as the “Red Planet”, the image that comes to mind is just that - a lot of red. That comes from the oxidization of the dust and rocks that cover the planet's surface, but there are some instances where the Red Planet still has a few visual tricks up its sleeve. One such trick was recently captured by the European Space Agency’s venerable Mars Express orbiter, which captured what seems to be a set of metallic waves inside a giant impact basin. But on closer inspection, it becomes clear they aren’t liquid metal or some sort of alien architecture, but a manifestation of Mars’ complex environment.