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Lecture 46: ExoPlanets - Planets around Other Stars

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Lecture 45: Is Pluto a Planet?

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Lecture 44: Comets

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Lecture 43: Icy Worlds of the Outer Solar System

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Lecture 42: Asteroids and Meteoroids

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Lecture 41: Planetary Rings

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Lecture 40: The Saturn System

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Lecture 39: The Moons of Jupiter

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Lecture 38: Uranus and Neptune

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Lecture 37: Jupiter and Saturn

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Lecture 36: Worlds in Comparison - The Terrestrial Planets

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Lecture 35: The Deserts of Mars

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Lecture 34: Venus Unveiled

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Lecture 33: Battered Mercury

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Lecture 32: The Origin of the Solar System

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Lecture 31: The Family of the Sun

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Lecture 30: The Moon

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Lecture 29: The Earth's Atmosphere

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Lecture 28: Inside the Earth

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Lecture 27: Deep Time - The Age of the Earth

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Lecture 26: Telescopes

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Lecture 25: Measuring Light - Spectroscopy

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Lecture 24: Matter and Light

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Lecture 23: Worlds Within: Atoms

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Lecture 22: Light the Messenger

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Lecture 21: The Rotation and Revolution of the Earth

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Lecture 20: Tides

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Lecture 19: Orbits

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Lecture 18: The Apple and the Moon - Newtonian Gravity

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Lecture 17: On the Shoulders of Giants: Isaac Newton and the Laws of Motion

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Lecture 16: Galileo and the Telescope

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Lecture 15: The Watershed: Tycho and Kepler

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Lecture 14: The Revolutions of Nicolaus Copernicus

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Lecture 13: Greek Astronomy

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Lecture 12: The Wanderers - Planetary Motions

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Lecture 11: The Calendar

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Lecture 10: Telling Time

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Lecture 9: Eclipses of the Sun and Moon

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Lecture 8: Phases of the Moon

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Lecture 7: The Four Seasons

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Lecture 6: Daily and Annual Motions

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Lecture 5: Mapping Earth and Sky

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Lecture 4: Measuring the Earth

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Lecture 3: The Starry Night

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Lecture 2: Astronomical Numbers

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Welcome to Astronomy 161