Mars Might Have a Solid Core

Every planet has a very different story, and the thing that always surprises me is to realize that these stories change with time. And i like how she talked about how every planet is different, and how like the insits tell you a lot about your history. Gess deffer, people too, right? You can lookinto my veins and be like, goat a lot of pin of butter. Unfortunately, sometimes our interiors do reveal our history exactly. We're in the middle of history. R wll, maybe to step us through here. Why do we think mars might have a solid core? Ikwhere did this idea first come from, and why do we need to assume that