Cosmos in the Classroom

A Personal Voyage (1980), A Spacetime Odyssey (2014), and Possible Worlds (2020)

by Dean Baird

The commentary pages were written by Professor Steven Dutch at the University of Wisconsin at Green Bay. I don't get the sense that he's the president of the Carl Sagan Fan Club. But his notes flesh out the episodes quite nicely.

I own both series on optical discs (DVD and BD). In the past, both series have streamed on Netflix. Sometimes it's possible to find episodes streaming for free. Free streaming is a fickle, turbulent, ever-changing churn. You can nearly always find what you're looking for if believe you can find it. Such is the nature of the Internet.

The titles of each episode initiate a Google video search. The results are as reliable as any search result, and come with no guarantees. Some links might, in fact, take you to a streaming episode. Others most surely won't. Consider it an adventure. But if you're determined to see an episode online, it is most likely possible.


COSMOS: A Personal Voyage - Carl Sagan - 1980   |   Scroll down for A Spacetime Odyssey and Possible Worlds
Episode
Search-Linked Title and Description
Question Set
Episode Commentary
I
The Shores of the Cosmic Ocean · Video+Transcript
At the beginning of this cosmic journey across space and time, Dr. Carl Sagan takes us to the edge of the universe aboard a spaceship of the imagination. Through beautiful special effects, we witness quasars, exploding galaxies, star clusters, supernovas and pulsars. Returning to our solar system, we enter a re-creation of the Alexandrian Library, the seat of learning on Earth 2,000 years ago.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

Steven Dutch's Cosmos 1 Notes
II
One Voice in the Cosmic Fugue · Video+Transcript
Dr. Sagan's cosmic calendar makes the history of the universe understandable and frames the origin of the Earth and the evolution of life. We see the evolutionary process unfold, from microbes to humans. Our understanding of how life developed on Earth enables us to venture to other worlds for imaginative speculations on what forms life might take elsewhere.
TPT: The Lessons of Phyz
Print-Friendly Google Docs
Steven Dutch's Cosmos 2 Notes
III
The Harmony of the Worlds · Video+Transcript
This episode is a historical re-creation of the life of Johannes Kepler, the last scientific astrologer, the first modern astronomer and the author of the first science fiction novel. Kepler provided the insight into how the moon and the planets move in their orbits and ultimately how to journey to them. It's also a story about the scientific process of discovery, and how the search for truth is never easy but always worthwhile.
TPT: The Lessons of Phyz
Print-Friendly Google Docs
Steven Dutch's Cosmos 3 Notes
IV
Heaven and Hell · Video+Transcript
A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. Then Dr. Sagan leads us on a tour of our solar system to see how other heavenly bodies have suffered from various cosmic catastrophes.
TPT: The Lessons of Phyz
Print-Friendly Google Docs


Steven Dutch's Cosmos 4 Notes
V
Blues for a Red Planet · Video+Transcript
Is there life on Mars? Dr. Sagan takes viewers on a tour of the red planet first through the eyes of science fiction authors, and then through the unblinking eyes of two Viking spacecrafts that have sent thousands of pictures of the stunning Martian landscape back to Earth since 1976. Though based on older Mars missions, Sagan's analysis still holds true.
TPT: The Lessons of Phyz
Print-Friendly Google Docs
Steven Dutch's Cosmos 5 Notes
VI
Travellers' Tales · Video+Transcript
Dr. Sagan compares the exhilaration of 17th-century Dutch explorers who ventured in sailing ships halfway around our planet in their quest for wealth and knowledge to an inside view of the excitement around Voyager's expeditions to Jupiter and Saturn. The newly acquired treasures of our present golden age of exploration are the focus of this episode.
TPT: The Lessons of Phyz
Print-Friendly Google Docs


Steven Dutch's Cosmos 6 Notes
VII
The Backbone of Night · Video+Transcript
Humans once thought the stars were campfires in the sky and the Milky Way "the backbone of night." In this fascinating segment Dr. Sagan takes us back to ancient Greece, when the basic question "what are the stars?" was first asked. He visits the Brooklyn elementary school of his childhood, where this same question is still on students' minds.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

VIII
Travels in Space and Time · Video+Transcript
A voyage to see how star patterns change over millions of years is followed by a journey to the planets of other stars, and a look at the possibility of time travel. This takes us to Italy, where a young Albert Einstein first wondered what it would be like to ride on a beam of light.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

IX
The Lives of the Stars · Video+Transcript
Using computer animation and amazing astronomical art, Dr. Sagan shows how stars are born, live, die and sometimes collapse to form neutron stars or black holes. We then journey into the future to witness "the last perfect day on Earth," 5 billion years from now, after which the sun will engulf our planet in the fires of its death throes.
TPT: The Lessons of Phyz
Print-Friendly Google Docs
Steven Dutch's Cosmos 9 Notes
X
The Edge of Forever · Video+Transcript
Dr. Sagan leads us on some awesome trips — to a time when galaxies were beginning to form, to India to explore the infinite cycles of Hindu cosmology, and to show how humans of this century discovered the expanding universe and its origin in the big bang. He disappears down a black hole and reappears in New Mexico to show us an array of 17 telescopes probing the farthest reaches of space.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

XI
The Persistence of Memory · Video+Transcript
The brain is the focus of this fascinating portion of our journey as Dr. Sagan examines another of the intelligent creatures with whom we share the planet Earth — whales. Then we wind through the maze of the human brain to witness the architecture of thought. We see how genes, brains and books store the information necessary for human survival.
TPT: The Lessons of Phyz
Print-Friendly Google Docs
Steven Dutch's Cosmos 11 Notes
XII
Encyclopedia Galactica · Video+Transcript
Are there alien intelligences? How could we communicate with them? What about UFOs? The answers to these questions take us to Egypt to decode ancient hieroglyphics, to the largest radio telescope on Earth and, in the Spaceship of the Imagination, to visit other civilizations in space. Dr. Sagan answers questions such as: "What is the life span of a planetary civilization?" and "Will we one day hook up with a network of civilizations in the Milky Way galaxy?"
TPT: The Lessons of Phyz
Print-Friendly Google Docs
Steven Dutch's Cosmos 12 Notes
XIII
Who Speaks for Earth? · Video+Transcript
Through the use of special effects we retrace the 15-billion-year journey from the big bang to the present. We also hear the tragic story of the martyrdom of Hypatia, the woman scientist of ancient Alexandria. This is the famous episode on nuclear war in which Dr. Sagan argues that our responsibility for survival is owed not just to ourselves, but also to the cosmos, ancient and vast, from which we spring.
TPT: The Lessons of Phyz
Print-Friendly Google Docs
Steven Dutch's Cosmos 13 Notes



COSMOS: A Spacetime Odyssey - Neil deGrasse Tyson - 2014
Episode
Title and Description Question Set

1

Standing Up in the Milky Way · Transcript (Google Docs)
The Ship of the Imagination has been idling for more than three decades, and yet it has never been overtaken. Its global legacy remains vibrant. Now, it's time once again to set sail for the stars.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

2

Some of the Things That Molecules Do · Transcript (Google Docs)
Life is transformation. Artificial selection turned the wolf into the shepherd and all the other canine breeds we love today. And over the eons, natural selection has sculpted the human eye out of a microscopic patch of pigment.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

3

When Knowledge Conquered Fear · Transcript (Google Docs)
There was a time, not so long ago, when natural events could only be understood as gestures of divine displeasure. We will witness the moment that all changed, but first--The Ship of the Imagination is in the brooding, frigid realm of the Oort Cloud, where a trillion comets wait. Our Ship takes us on a hair-raising ride, chasing a single comet through its million-year plunge towards the Sun.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

4

A Sky Full of Ghosts · Transcript (Google Docs)
An exploration of how light, time and gravity combine to distort our perceptions of the universe. We eavesdrop on a series of walks along a beach on summer nights in the year 1809.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

5

Hiding in the Light · Transcript (Google Docs)
The keys to the cosmos have been lying around for us to find all along. Light, itself, holds so many of them, but we never realized they were there until we learned the basic rules of science.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

6

Deeper, Deeper, Deeper Still · Transcript (Google Docs)
 S
cience casts its Cloak of Visibility over everything, including Neil, himself, to see him as a man composed of his constituent atoms.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

7

The Clean Room · Transcript (Google Docs)
The little known but heroic story of a guy from Iowa that can't really be told without going all the way back to the time long before the Earth was formed - to the origin of the elements in the hearts of stars.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

8

Sisters of the Sun · Transcript (Google Docs)
The constellation of the Pleiades provides a vehicle for us to explore a series of paradoxes and epochal discoveries for humanity.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

9

The Lost Worlds of Planet Earth · Transcript (Google Docs)
The Ship of the Imagination takes us on a journey through space and time to grasp how the autobiography of the Earth is written in its atoms, its oceans, its continents, and all living things.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

10

The Electric Boy · Transcript (Google Docs)
Our world of high technology and instantaneous electronic communication with each other and with our robotic emissaries at the solar system's frontier is demystified.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

11

The Immortals · Transcript (Google Docs)
Life itself sends its own messages across billions of years.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

12

The World Set Free · Transcript (Google Docs)
Our journey begins with a trip to another world and time, an idyllic beach during the last perfect day on the planet Venus, right before a runaway greenhouse effect wreaks havoc on the planet.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

13

Unafraid of the Dark · Transcript (Google Docs)
Science savors the fact that even bigger mysteries, mysteries like dark energy, await us.
TPT: The Lessons of Phyz
Print-Friendly Google Docs


COSMOS: Possible Worlds - Neil deGrasse Tyson - 2020
Episode
Title and Description Question Set

1

Ladder to the Stars
An adventure spanning billions of years into the evolution of life and consciousness. A visit to a 100,000-year-old laboratory. The story of the change in life-style that radically altered human existence and the life of the heretic who found god in the book of nature, opening our way to the stars.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

2

The Fleeting Grace of the Habitable Zone
There is no refuge from change in the cosmos. There will come a time in the life of the Sun when Earth will no longer be a home for us. The story of our ancestors who rose to a comparable challenge and a long-term vision of our future on other worlds.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

3

Lost City of Life
A new vision of genesis at the bottom of the blood red sea of the infant Earth. And the story of the man who found the first clues to life's beginning in a green jewel. As he searched for life's origin, he risked his own, daring to toy with his Nazi tormentors.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

4

Vavilov
In the first half of the 20th century pioneering geneticist Nikolai Vavilov traveled five continents assembling a treasury of the worlds seeds. He dreamed that science could be the means to end hunger. His refusal to tell a scientific lie cost him his life. The heroism of his colleagues and its direct impact on your life is one of the most stirring stories in the history of science.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

5

The Cosmic Connectome
A voyage of discovery through the evolution of consciousness with stops in ancient Greece, a visit to the largest life form on Earth, into the poignant dream of an abandoned orphan that opened the way to our understanding of the architecture of thought and beyond to a vision of a galactic network of thought.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

6

The Man of a Trillion Worlds
A child lies on the rug of a tenement dreaming of interstellar adventures. At the dawn of the space age, a young Carl Sagan's career is forged in the clash of his mentors, two scientific titans. Sagan goes on to realize his childhood dreams, to carry their research forward and communicate its significance to the whole world.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

7

The Search for Intelligent Life on Earth
A revelation of the hidden underground network that is a collaboration of four kingdoms of life, and a true first contact story between humans and beings who communicate in a symbolic language and have maintained a representative democracy for many tens of millions of years.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

8

The Sacrifice of Cassini
The mysterious untold story of the scientist who figured out how to go the Moon while fighting for his life in a WWI trench. He wrote a letter to fifty years in the future. It made the Apollo Mission possible. And the saga of the twenty-year long odyssey of a robotic explorer ordered to commit suicide on another world.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

9

Magic Without Lies
In the counterintuitive realm of quantum mechanics, light can be two contradictory things, and somehow—no one knows how—an unseen observer can alter the nature of reality. The man who stumbled on this hole in reality and the still-unfolding technological revolution that it made possible.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

10

A Tale of Two Atoms
Two atoms from different parts of the universe meet on a small planet. How a deadly embrace between science and state altered the fate of the world, and a gripping cautionary tale of others who grew used to living in the shadow of grave danger until it killed them all except one.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

11

Shadows of Forgotten Ancestors
From the birth of the devil in ancient Persia, where a beloved family dog becomes a seething beast to a searing story of saintliness among macaque monkeys, an exploration of human potential for change. It concludes with the story of how one of history's greatest monsters was transformed into one of its shining lights.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

12

Coming of Age in the Anthropocene
What kind of world can a child born in 2020 expect to grow up in? And when did our slide into planet-wide environmental destruction begin? The possible world that awaits our baby girl into her 20s: one darkened by our refusal to face the real and mounting challenges we face but concluding with a message of hope.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

13

Seven Wonders of the New World
The young Carl Sagan and Neil Tyson first discovered their passion for science at the NY World's Fairs of the past. We visit the dazzling Pavilions of the 2039 NY World's Fair, where problems we currently think intractable have been plausibly solved through public commitment and scientific imagination. And our baby is a woman now, with a baby of her own and a future bright with possibilities.
TPT: The Lessons of Phyz
Print-Friendly Google Docs

Posted December 20, 2006. Updated  April, 2023
Dedicated to the spirit of Carl Sagan and the energy of Neil deGrasse Tyson.