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Preface
Position
Motion
Seasonal Stars
Solar vs. Sidereal Day
Ecliptic
Star Charts
Kepler's Second Law
Kepler's Third Law
Newton's Laws and Gravity
Apparent and Absolute Magnitudes of Stars
The Parsec
Parallax and Distance
Spectroscopic Parallax
Electromagnetic (EM) Spectrum of Light
Telescopes and Earth's Atmosphere
Observing the Universe with Multiple Telescopes
Luminosity, Temperature, and Size
Blackbody Radiation
Types of Spectra
Light and Atoms
Observing the Invisible - Molecular Excitations and Synchrotron Radiation
Analyzing Spectra
Doppler Shift
The Cause of Moon Phases
Predicting Moon Phases
Path of the Sun
Seasons
Observing Retrograde Motion
Earth's Changing Surface
Greenhouse Effect
Formation of Planets in the Solar System
Sizing Up the Planets
Comparing the Surfaces of Planets
Sun Size
H-R Diagram
Star Formation and Lifetimes
Binary Stars
Detecting Extrasolar Planets with the Doppler Method
Detecting Exoplanets with the Transit Method
Stellar Evolution
Milky Way Scales
Galaxy Classification
Dark Matter
Looking at Distant Objects
Expansion of the Universe
Hubble-Lemaitre Law
Making Sense of the Universe and Expansion
Expansion, Lookback Times, and Distances
Detecting Exoplanets with Gravitational Microlensing
The Big Bang