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?

Why did the Roman Empire, which dominated Europe and the Mediterranean for five centuries, inexorabl...

Documentary about the Griffith Observatory, shown at their Leonard Nimoy Event Horizon Theater

In the brief period of peace after a terrible war on a far future Earth, an outer-space military aca...

Billions of years ago, Venus may have harbored life-giving habitats similar to those on the early Ea...

Forensic experts scan Pompeii’s victims to investigate why they didn’t escape the eruption.

The New Horizons team examines the latest findings and imagery from Pluto and the fringes of our sol...

Part of the Almost Famous series. Jocelyn Bell was a graduate student at Cambridge in 1967 when she ...

Ring of Fire is about the immense natural force of the great circle of volcanoes and seismic activit...

For over three decades, NASA and an international team of scientists and engineers pushed the limits...

Delve into the digestive system with this lighthearted and informative documentary that demystifies ...

Oliver is a chimpanzee who not only can walk upright, but does of his own accord. For years there ha...

A docudrama depicting a hypothetical nuclear attack on Britain. After backing the film's developmen...

Cities around the world have a major problem with rats. The animal has generally been regarded as a ...

Five times, Earth has faced apocalyptic events that swept nearly all life from the face of the plane...

Documentary which uses the latest, most detailed imagery to reveal the monthly life cycle of the moo...