# b.

# Orbital mechanics

# Kepler's laws

# Rotation and circular motion

# Orbital motions of binary and multiple star systems

# Parallax

# Spectroscopic parallax

# Period-luminosity relations

# Distance modulus

# Calculate distances to RR Lyraes

# Calculate distances to Type Ia supernovas

# Hydrostatic equilibrium

# Stefan-Boltzmann law

# Stellar structure and interiors