How is the cornstarch mixture like the asthenosphere?

The cornstarch mixture, often referred to as oobleck, behaves like a non-Newtonian fluid, where it can act as both a solid and a liquid depending on the stress applied to it. Similarly, the asthenosphere, a layer of the Earth's mantle, exhibits plasticity and can flow over geological timescales when subjected to pressure and heat. Both substances can resist deformation under certain conditions but can also flow or change shape when stressed, demonstrating their unique mechanical properties. This analogy highlights the dynamic nature of both the cornstarch mixture and the asthenosphere in response to external forces.