Per Aspera Ad Astra • 1989 • episode "4/10" • The Sagan Series

12:12

Twenty years after its launch, we bid farewell to the Cassini spacecraft as it plunges into Saturn’s atmosphere in a planned death spiral. Productive right to the end, Cassini has rewritten the textbook on not only Saturn and its moons, but our whole solar system as well.

1 • Science Breakthroughs • 2017 • Astronomy

49:06

In 1971 a Russian spacecraft attempted to photograph Mars, but the planet did not cooperate. Since then, we've learned more about the atmosphere of the red planet, and what makes it similar to, but very different from, our own.

6/8 • The Planets • 2004 • Astronomy

23:43

CERN and the University of California-Santa Barbara are collaborating in the search for the elusive substance that physicists and astronomers believe holds the universe together -- dark matter. Where is this search now in the realm of particle physics and what comes next?

2017 • Astronomy

42:01

The possibility of a human civilization on Mars has seemed like a fantasy -- until now. We go behind-the-scenes at SpaceX, where Elon Musk shows us just how real this fantasy can be.

3/6 • Mars: The Secret Science Series 1 • 2014 • Astronomy

42:03

Examining a ninth planet that may be on the outer edge of the solar system. Scientists speculate that it could be 10 times the size of Earth and have moons capable of hosting life.

S5E2 • How the Universe Works • 2016 • Astronomy

48:57

As we continue to discover the diversity of life on Earth, we are forced to stop and marvel at how tenacious and inventive life is. So, as we forge onward in our robotic explorations of other worlds, we shouldn't be too surprised to find other places where conditions seem to be right for life.

7/8 • The Planets • 2004 • Astronomy