Herstellung von Marsmonden: Supercomputer bieten „disruptive“ neue Erklärung

How’s this a new explanation? One of the first ideas considered was that they were captured asteroids, the orbital dynamics meaning that this would involve either binary asteroids that left one member behind, or an asteroid or asteroids being tidally disrupted with some fragments being captured. A detailed simulation of such a scenario is nice, but spectrographic observations apparently are more consistent with them being made from material that came from Mars…