Lecture
This lecture covers the composition of the cosmos, including dark matter and dark energy, and the dynamics of astrophysical fluids and plasmas. It delves into the structure of the universe, the recombination time, and the continuum model. The presentation progresses to the modelling of fluids and plasmas, from quantum particles to classical particles, and the transition to equilibrium solutions. The lecture concludes with discussions on the conservation equations, moments of the conservation equation, and the conservation of mass, momentum, and energy.