Last Watched

"Astronomy"  Sort by

Catastrophes that Changed the Planets

   2011    Science
The planets of our solar system have experienced epic catastrophes throughout their long history, both raining down from outside and bubbling up from within. We'll voyage back in time to investigate the violent events that profoundly shaped the planets, including earth itself. We'll witness stunning revelations about what transformed Mars into a barren, hostile desert... The disaster that changed Venus from temperate to hellish... The impact that blew away Mercury's mantle, turning it into a planetary core... A colossal disturbance that rearranged the orbits of the gas giants... Titanic impacts on Jupiter... And how a lost moon may finally explain Saturn's rings.
Series: The Universe

How the Solar System was Made

   2011    Science    3D    HD
At 4.6 billion years old, the Solar System is our solid, secure home in the Universe. But how did it come to be? In this episode we trace the system's birth from a thin cloud of dust and gas. Shocked by a nearby supernova, the pull of gravity and natural rotation spun it into a flat disc from which the Sun and planets coalesced. It all happened in the space of 700 million years, during which the planets jockeyed for position, dodging the Late Heavy Bombardment of deadly asteroids and setting into the neat, stable system that we now realize might be a rarity in the universe.
Series: The Universe

Worst Days on Planet Earth

   2011    Nature    3D    HD
Earth may seem like the most hospitable planet in the solar system. But look again. Startling new discoveries reveal the blue planet has been plagued by more chaos and destruction than scientists once imagined. Stand on the Earth billions of years ago as a primitive planet called Theia slams into it. Shiver as our entire globe is frozen over like a gigantic snowball. Feel the heat as mammoth volcanoes scorch the landscape and darken the sky. From a cosmic gamma ray burst frying away the ozone layer to an Everest-size asteroid slamming into the ocean, we'll reveal new information about how these unparalleled events drove life to the brink of total extinction. Out of this continuous devastation, how has our planet--and life--got to where it is today? Are the worst days behind us--or lurking in the distant future?
Series: The Universe

God and the Universe

   2011    Science    3D    HD
Since the dawn of civilization, humans have wondered who or what created the universe. Religion offers a spiritual answer, but do the latest discoveries in physics show evidence of a transcendent intelligence, or simply that the laws of physics by themselves could have led to the universe in which we live? This episode embarks on a mind-bending scientific search for God, asking physicists and theologians if the seemingly miraculous way the universe has been calibrated to support life is evidence of a creator...whether string theory will eventually be able to rule out the existence of God...why Stephen Hawking says the universe could have been created spontaneously...and how an advanced civilization in another universe could have conceivably created our own.
Series: The Universe

Storm Worlds

   2024    Science    3D    HD
In Episode 3, embark on a breathtaking journey with Professor Brian Cox as he ventures into the storm worlds of our solar system. This chapter uncovers colossal tempests that have raged for centuries, metallic frost blanketing alien mountains, and monsoon rains falling a billion kilometers from Earth. A visually stunning exploration of the most extreme weather in the cosmos — a chapter that will forever change how we view planetary atmospheres.
Series: Solar System

How Big How Far How Fast

   2012    Science
Push the limits of your imagination as astronomers attempt to grasp the mind-boggling extremes of size, distance and speed within our universe by bringing them down to earth. In this episode, our cast uses awesome analogies to bring the biggest objects, farthest distances and fastest speeds down to earth. To truly understand the scale of the cosmos, we jump behind the wheel of monster trucks, scale the Golden Gate Bridge, and race across the desert in a rocket-powered car.
Series: The Universe
Chased by Sea Monsters

Chased by Sea Monsters

2003  Science
Leaving Neverland

Leaving Neverland

2019  Culture
Mind Field

Mind Field

2019  Medicine
Invisible Worlds

Invisible Worlds

2010  Science
Human: The World Within

Human: The World Within

2021  Medicine