PART I

Unlocking the Secrets to the Heavens

PART II

Unlocking the Secrets to the Heavens (continued)

Lecture 1

A Grand Tour of the Cosmos

Lecture 9

The Early History of Astronomy

Lecture 2

Journey Through Space and Time

Lecture 10

The Copernican Revolution

Lecture 3

Light – The Supreme Informant

Lecture 11

On the Shoulders of Giants

Lecture 4

The Fingerprints of Atoms

Lecture 12

One Small Step – The Earth and Moon

Lecture 5

Tools of the Trade

Lecture 13

Paradise Lost – Venus and Mars

Lecture 6

Space Telescopes and the Celestial Spheres

Lecture 14

Planetary Behemoths – Jupiter and Saturn

Lecture 7

Our Sun – The Nearest Star

Lecture 15

Distant Worlds and Solar-System Debris

Lecture 8

Lunar Phases and Glorious Eclipses

Lecture 16

Comets and Catastrophic Collisions

PART III

The Stars and Their Lives

PART IV

A Universe of Galaxies

Lecture 17

Distant Suns

Lecture 25

Starting at Home – The Milky Way

Lecture 18

Social Stars – Binaries and Clusters

Lecture 26

One Giant Leap – Other Galaxies

Lecture 19

Nature’s Nuclear Reactors

Lecture 27

The Dark Side of Matter

Lecture 20

The Fate of Our Sun

Lecture 28

The Birth and Life of Galaxies

Lecture 21

Exploding Stars – Celestial Fireworks!

Lecture 29

Quasars – Cosmic Powerhouses

Lecture 22

The Corpses of Massive Stars

Lecture 30

In the Belly of the Beast

Lecture 23

Hearts of Darkness

Lecture 31

Are We Alone?  The Search Begins

Lecture 24

The Quest for Black Holes

Lecture 32

Communicating with Extraterrestrials

PART V

The Birth and Life of the Universe

Lecture 33

The Expansion of the Universe

Lecture 37

Echoes of the Big Bang

Lecture 34

The Age of the Universe

Lecture 38

In the Beginning

Lecture 35

The Geometry and Fate of the Universe

Lecture 39

The Ultimate Free Lunch?

Lecture 36

Einstein’s Biggest Blunder?

Lecture 40

A Universe of Universes