Miniverse • 2017

47:38

In 1972, the crew of Apollo 17 captured the iconic 'Blue Marble': the first photograph ever taken by an astronaut of the entire Earth. This photo had a profound effect on our perception of ourselves. Since then, Nasa has taken millions more. In this epic, powerful and revelatory documentary, a new generation of astronauts, including Tim Peake, use those images of the Earth from space to reveal the astonishing transformation humanity has wrought in the 45 years since 'Blue Marble'. Together, the astronauts provide an armchair tour of the change they've witnessed from orbit, as humankind etches our presence on the planet. Using stunning time-lapse sequences, the programme reveals how we are reshaping our world, for better and for worse: from the sprawling megacities of China to vast desert farms in the Middle East and from the melting snowcap of Kilimanjaro to giant solar arrays in Nevada.

2017 • Astronomy

11:20

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

59:00

Space scientist Dame Dr Maggie Aderin-Pocock continues her search for alien life with a grand tour of our solar system. Could any other planets or moons out there be habitable?

S1E2 • Royal Institution Christmas Lectures: Is There Life Beyond Earth? • 2025 • Astronomy

47:20

An asteroid colliding with the Earth is not a just Hollywood fantasy. NASA and the Space Guard Foundation develop deflection plans to save the Earth from a comet, meteor or asteroid with Earth in its trajectory. Take a look at how the world is working together to keep our skies safe.

8 • Cosmic Front • 2014 • Astronomy

42:01

Recent discoveries could explain how supermassive black holes grow so big, one of the universe's most mysterious questions. Neither dark matter nor cannibalism can fully explain these monsters, but the latest science might finally provide an answer.

S5E3 • How the Universe Works • 2016 • Astronomy

17:37

This is the epic story of the James Webb Space Telescope, told first-hand by the scientists who developed it. Building the largest, most advanced, and most expensive telescope ever made does not come without its challenges. But seeing further into space than ever before will be worth the struggle.

S4E1 • Breakthrough • 2021 • Astronomy