Mars Is Hard Core or Soft and Squishy on the Yeh?

Daniels: A lot of people have heard that mars is smaller and cooled faster, doesn't have volcanoes on the surface or a magnetic field. And so i think that leads people to suspect that it might just be a big lump of hard rock,. unlike the earth. But why should we care whether mars is hard core or soft and squishy on the yeh? Well, for me, there's sort of two levels there. One is just inherent curiosity about what's inside stuff. So we sort of want to know what's out there, because we could be shocked.