That’s where Marcus’s simulations come in. He’s trying to peek into the red abyss by extrapolating from surface observations. His models suggest that the deep maelstrom doesn’t care what the clouds on top are doing, and that the vortex could continue to rage for centuries to come. One theory, however, can only go so far. “Modeling is great because it can give you information about the parts you can’t see, but modeling can be bad because you can’t prove it,” Simon says.