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?

Based on the famous Gustav Holst musical suite, this musical film takes watchers on a magnificent jo...

Cave paintings and lunar calendars exist in the caves and remains of prehistoric hunters studied rec...

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

The first feature from Alison McAlpine is a dialogue with the heavens—in this case, the heavens abov...

This feature-length documentary is a portrait of eclipse chasers, people for whom solar eclipses - a...

In October 2023, a European research team succeeded in generating an enormous amount of energy from ...

Chaco Canyon, located in northwest New Mexico, is perhaps the only site in the world constructed in ...

214 million years ago a gigantic meteorite broke up and impacted Earth. 65 million years ago, the im...

In 1872, in the cave of Cavillon in Monaco, archaeologist Émile Rivière (1835-1922) unearthed an app...

CERN and the University of California-Santa Barbara are collaborating in the search for the elusive ...

The sun is the miracle that makes everything possible - but also the greatest danger. For the first ...

Discovered about twenty years ago, the immense masses of water vapor that fly over the Amazon, calle...

How were the giant stone heads of Rapa Nui – also known as Easter Island – carved and raised, and wh...

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

Since the summer of 2020, boats along the Atlantic coast from the Strait of Gibraltar to the Bay of ...