DocuWatch on Facebook
Art America Britain History Science Societies War Shop
DocuWatch

The Day the Earth Nearly Died

« The Core

The Day The Oceans Boiled »

Description

The Day the Earth Nearly Died

From Wikipedia

The history of the Earth describes the most important events and fundamental stages in the development of the planet Earth from its formation to the present day during the last 4.6 billion years. Nearly all branches of natural science have contributed to the understanding of the main events of the Earth's past. The Earth is approximately one third of the age of the universe. Immense geological and biological changes have occurred during that time span.

A rare characteristic of our planet is its large natural satellite, the Moon. During the Apollo program, rocks from the Moon's surface were brought back to Earth. Radiometric dating of these rocks has shown the Moon to be 4527 ± 10 million years old, about 30 to 55 million years younger than other bodies in the solar system. Another special feature is the relatively low density of the Moon, which must mean it does not have a large metallic core, like all other terrestrial bodies in the solar system. In fact, the Moon has a bulk composition closely resembling the Earth's mantle and crust together, without the Earth's core. This has led to the giant impact hypothesis, the idea that the Moon was formed during a giant impact of the proto-Earth with another protoplanet. The Moon formed by accretion of the material blown off the mantles of the proto-Earth and impactor.

Other videos in channel "Planet":

A World Without Water A World Without Water After The Warming After The Warming Age Of Stupid Age Of Stupid
Antarctica Antarctica Death of the Oceans Death of the Oceans
Disaster At Death Coast Disaster At Death Coast Earth Story Earth Story Earth's Invisible Shield Earth's Invisible Shield
El Niño El Niño Europe A Natural History Europe A Natural History
Flow: For The Love Of Water Flow: For The Love Of Water Freak Wave Freak Wave Global Dimming Global Dimming
Global Weirding Global Weirding Great Discoveries - Earth Sciences Great Discoveries - Earth Sciences Greenhouse Effect - (1988) Greenhouse Effect - (1988)
Hot Planet? Hot Planet? How Earth Made Us How Earth Made Us How the Earth was Made How the Earth was Made
How the Earth Works - Lecture How the Earth Works - Lecture Invaders From The Sea Invaders From The Sea Japan Earthquake Japan Earthquake
Jetstream Jetstream Journeys from the Centre of the Earth Journeys from the Centre of the Earth Killer Algae Killer Algae
Killer Lakes Killer Lakes Last Days On Earth Last Days On Earth Lightning: Nature Strikes Back Lightning: Nature Strikes Back
Magnetic Storm Magnetic Storm Master of the Ionisphere Master of the Ionisphere Measuring the Roof of the World - (1991) Measuring the Roof of the World - (1991)
Mega Tsunami - Wave Of Destruction Mega Tsunami - Wave Of Destruction Men Of Rock Men Of Rock Miracle Planet Miracle Planet
Planet Earth - The Living Machine Planet Earth - The Living Machine Planet In Peril Planet In Peril Snowball Earth Snowball Earth
The 11th Hour The 11th Hour The Big Chill The Big Chill The Climate Wars The Climate Wars
The Core The Core The Day the Earth Nearly Died The Day the Earth Nearly Died The Day The Oceans Boiled The Day The Oceans Boiled
The Day The Wave Came The Day The Wave Came The Living Planet - The Building of the Earth The Living Planet - The Building of the Earth The Living Sea The Living Sea
The Lost World of Lake Vostok The Lost World of Lake Vostok The Man Who Moved The Mountains The Man Who Moved The Mountains The Next Megaquake The Next Megaquake
The Power Of The Planet The Power Of The Planet Volcano Hell Volcano Hell What's Killing The Sea Otters? What's Killing The Sea Otters?
Why Can't We Predict Earthquakes ? Why Can't We Predict Earthquakes ?    
Video channels
Videos in this channel
AdSense
Featured
Featured
Featured
Featured
Featured
Featured