Part 3/7:
There are deep connections between simulations of different phenomena, like weather, climate, and galaxies. At a fundamental level, they are all dealing with "fluids" - materials that can be moved around and reshaped, described by equations like the Navier-Stokes equations.
While the specific circumstances differ, the underlying mathematical frameworks have a lot in common. Advances in solving the equations for one domain, like climate, can often be applied to another, like cosmology. The challenge is in capturing the right level of detail and approximating the small-scale processes that can't be fully resolved.