A young Carl Sagan realizes his childhood dreams, carrying his mentors' research forward.
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An adventure spanning billions of years into the evolution of life.
2020 • Astronomy
A long-term vision of humanity's future worlds is explored.
2020 • Astronomy
Explore the story behind the man who found the first clues to life's beginnings on Earth.
2020 • Astronomy
An abandoned orphan's dream opens the way to understanding the architecture of thought.
2020 • Astronomy
A young Carl Sagan realizes his childhood dreams, carrying his mentors' research forward.
2020 • Astronomy
A hidden underground network, a collaboration of four kingdoms of life, is revealed.
2020 • Astronomy
A scientist figures out how to go to the moon while fighting for his life in a war trench.
2020 • Astronomy
The man who stumbled on a hole in the reality of quantum mechanics and the still-unfolding technology that made it possible.
2020 • Astronomy
How a deadly embrace between science and state altered the fate of the world, and a gripping cautionary tale of mass casualty and unlikely survival.
2020 • Astronomy
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, join an exploration into the human potential for change. One of history's greatest monsters is transformed into one of its shining lights.
2020 • Astronomy
In what kind of world can a child born in 2020 expect to grow up? When did our slide into planetwide environmental destruction begin? Enter the possible world that awaits a 2020 baby in her twenties: one darkened by our refusal to confront the real and mounting challenges we face but one which still offers a message of hope.
2020 • Astronomy
A visit to the 2039 New York World's Fair, where intractable problems may have been solved.
2020 • Astronomy
The epic story of Earth's battle with the sun. Our star would wipe us out in an instant without the incredible planetary shields that protect us. Astronaut host – Jeff Hoffman.
3/10 • One Strange Rock • 2018 • Astronomy
Saturn's secrets are out. The ferocious weather, the evolving ring system and the discovery of active geology on Saturn's moons has rewritten the textbooks. Scientists are looking for life on Saturn's moons and they may have found it on Titan.
S3E5 • How the Universe Works • 2014 • Astronomy
An inspirational portrayal of the triumphs and tragedies punctuating the first 50 years of NASA's manned missions. From the pioneering Mercury launches to the daring Gemini project, this program reveals the epic behind the scenes struggle that ultimately carried men to the Moon.
2015 • Astronomy
With repeated triumphs and new challenges comes increasing risk, until loss breaks the pattern. The white-knuckle suspense thriller of Apollo 13's famous near-disaster is only a triumphant prelude to darker moments ahead. The launch of the space shuttle program promises routine trips to Earth orbit for many new astronauts. But just when that promise seems fulfilled, routine shuttle launches begin to bore the public. NASA responds by training a school-teacher to fly, in order to teach children lessons from space. Christa McAuliffe's life is tragically cut short as she and the rest of the crew perish aboard the shuttle Challenger. All missions are halted. Eventually the shuttle returns to orbit, for fifteen years of successful missions until disaster strikes again with the shocking loss of Columbia. It would be the beginning of the end for the shuttle.
S1E3 • The Space Age: NASA's Story • 2009 • Astronomy
How do astronomers make sense out of the vastness of space? How do they study things so far away? Today Phil talks about distances, going back to early astronomy. Ancient Greeks were able to find the size of the Earth, and from that the distance to and the sizes of the Moon and Sun. Once the Earth/Sun distance was found, parallax was used to find the distance to nearby stars, and that was bootstrapped using brightness to determine the distances to much farther stars.
25 • Crash Course Astronomy • 2015 • Astronomy
Horizon takes the ultimate trip into the unknown, to explore a dizzying world of cosmic bounces, rips and multiple universes, and finds out what happened before the big bang.