Experimental errors - a determination of g; experimental errors - is the period of a pendulum amplitude-dependent?; celestial co-ordinates and the celestial globe; daily and annual motions of the Sun; resolving power of the human eye; optical properties of lenses and the refracting telescope; phases of the moon; graphical construction of orbits; rotation of the Sun; radioactive decay and the dating of rocks; rotation of planets using the Doppler effect; power output of the Sun; photometry; parallax distance determinations; emission spectrum of hydrogen; interactions of matter and radiation; observations of d Cephei; Algol and eclipsing binaries - part 1; Algol and eclipsing binaries - part 2; stellar spectra and the Hertzsprung-Russell diagram; distance to cepheid variable stars; galactic distance determinations using novae; globular clusters - distances and ages; Hubble's Law; quasar red shifts and distances; entropy and cosmology. Appendices: astrophysical data; maps of the evening sky.
