Explores the expansion and Hubble law in astrophysics, covering the Hubble constant, cosmological redshift, critical density, and cosmic background radiation.
Introduces the basics of wave propagation, covering longitudinal and transverse waves, superposition, reflection, d'Alembert equation, Fourier decomposition, and wave surfaces.
Explores the 3D distribution of galaxies, galaxy clustering, and the cosmic microwave background, shedding light on the observable universe's contents and properties.