This course covers the dynamics of the space environment. Coverage includes orbital mechanics, the dynamics of the Earth, the Earth-Moon system, the planets and satellites of the Solar System, telescopes and detectors, blackbody radiation laws, stellar spectra, stellar structure, stellar evolution, stellar deaths, galactic structure and evolution, active galaxies and cosmology. Topics of current interest are surveyed including neutron pulsars, black holes, supernovas, quasars, and the cosmic background radiation.