Las lecciones
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- 1 The celestial sphere and the wandering planets
- 2 Kepler's three laws
- 3 Newton's gravitation and orbital speed
- 4 Temperature, color and Wien's law
- 5 Spectral lines and the Doppler shift
- 6 Telescopes and light-gathering power
- 7 The worlds compared
- 8 Craters, comets, asteroids and meteorites
- 9 Formation, the frost line and exoplanets
- 10 The Sun's fusion and life span
- 11 Parallax and the inverse square of brightness
- 12 The H-R diagram and the sizes of stars
- 13 How stars form
- 14 How stars evolve
- 15 How stars make the elements
- 16 White dwarfs, neutron stars and black holes
- 17 The Milky Way and dark matter
- 18 Galaxies, Cepheids and the distance ladder
- 19 Hubble's law and the Big Bang
- 20 Habitable zones and transiting planets
- 21 Evaluating claims of life beyond Earth