Apollo 11 • 2019

52:48

The Space Shuttle fleet was retired in 2011 after leading international missions for three decades. This is the dramatic story of the tragedies and triumphs of the Space Shuttle fleet, and how it broadened humankind's exploration of space.

14 • Cosmic Front • 2014 • Astronomy

11:14

The universe isn't just a vast empty ocean sprinkled with galaxies – most of the atoms are actually drifting in between, in the intergalactic medium. If we look closely, we can see who is in charge here: Quasars, the single most powerful objects in existence. As small as a grain of sand compared to the amazon river, they reside in the centers of some galaxies, shining with the power of a trillion stars, blasting out huge jets of matter, completely reshaping the cosmos around them. They are so powerful that they can kill a galaxy. What are they, and how do they mold the structure of the universe at their whim?

In a Nutshell • 2023 • Astronomy

58:58

The oceans define the earth. They are crucial to life and we used to think that they were unique to our blue planet. But we were wrong. It has recently been discovered that there are oceans all over our solar system, and they are very similar to our own. And now scientists are going on an epic journey in search of new life in places that never seemed possible. Nasa is even planning to dive to the depths of a strange, distant ocean in a remarkable submarine. Horizon discovers that the hunt for oceans in space is marking the dawn of a new era in the search for alien life.

Horizon • 2016 • Astronomy

28:46

It's not as crazy as it sounds: life on Earth could be descended from space-faring microbes from Mars, or even further beyond, riding here on an interplanetary highway of asteroids. Extremophile bacteria may be resilient enough to survive the intense 3-stage journey, by repairing their own damaged DNA or hibernating for the long and deadly journey through space.

melodysheep • 2026 • Astronomy

10:40

Today Phil’s explaining the stars and how they can be categorized using their spectra. Together with their distance, this provides a wealth of information about them including their luminosity, size, and temperature. The HR diagram plots stars’ luminosity versus temperature, and most stars fall along the main sequence, where they live most of their lives.

26 • Crash Course Astronomy • 2015 • Astronomy

43:01

A soaring quest through the solar system’s exotic and hidden water realms, from the deep seas below the icy crust of Europa to the vast prehistoric oceans that once existed on Mars billions of years ago.

S1E4 • Space's Deepest Secrets • 2016 • Astronomy