At the edge of our solar system supposedly lies an immense planet. Five to ten times the size of the Earth. Several international teams of scientists have been competing in a frantic race to detect it, in uncharted territories, far beyond Neptune. The recent discovery of several dwarf planets, with intriguing trajectories, have put astronomers on the trail of this mysterious planet. Why is this enigmatic planet so difficult to detect? What would a ninth planet teach us about our corner of the universe? Could it help us unlock some of the mysteries of our solar system?
Irish director Donagh Coleman explores the extraordinary phenomenon of Tukdam, whereby some Tibetan...
The captivating tales of the people and events behind one of humanity's greatest achievements in exp...
Filmmaker Werner Herzog combs through the film archives of volcanologists Katia and Maurice Krafft t...
In Astronomy Part 2, you will learn all about the planets, asteroids, comets, meteoroids, the layers...
This series also covers the essential concepts of astronomy: gravity, the light spectrum, Earth's ma...
In an age when misinformation, alternative facts, and conspiracy theories have become mainstream, UF...
Computer animation and footage from NASA space missions explain how our solar system evolved and the...
Today, hundreds of kilometers above our heads, millions of pieces of trash are orbiting randomly at ...
60 years ago, almost nothing was known of elephants in the wild. But then one young Scottish biologi...
In the brief period of peace after a terrible war on a far future Earth, an outer-space military aca...
Martinique Island, 1974. Inspired by the writings of the Martiniquais poet and politician Aimé Césai...
A team of international scientists attempt to document the first-ever image of a black hole.
The Mandrin Cave in the Rhône Valley is a fascinating excavation site. Archaeologist Ludovic Slimak ...
Documentary about the Griffith Observatory, shown at their Leonard Nimoy Event Horizon Theater