Earth Without A Moon - NEW BBC Documentary Full HD
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Earth, also called the world and, less frequently, Gaia (and Terra in some works of science fiction) is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical object known to accommodate life. The earliest life on Earth arose at least 3.5 billion years ago. Earth's biodiversity has expanded continually except when interrupted by mass extinctions.[31] Although scholars estimate that over 99 percent of all species, amounting to over five billion species, that ever lived on the planet are extinct, Earth is currently home to 10–14 million species of life, of which about 1.2 million have been documented and over 86 percent have not yet been described. Over 7.3 billion humans depend upon its biosphere and minerals. Earth's human population is divided among about two hundred sovereign states which interact through diplomacy, conflict, travel, trade and communication media. According to evidence from radiometric dating and other sources, Earth was formed about 4.54 billion years ago. Within its first billion years, life appeared in its oceans and began to affect its atmosphere and surface, promoting the proliferation of aerobic as well as anaerobic organisms and causing the formation of the atmosphere's ozone layer. This layer and the geomagnetic field blocked the most life-threatening parts of the Sun's radiation, so life was able to flourish on land as well as in water. Since then, the combination of Earth's distance from the Sun, its physical properties and its geological history have allowed life to thrive and evolve. Earth's lithosphere is divided into several rigid tectonic plates that migrate across the surface over periods of many millions of years. Seventy-one percent of Earth's surface is covered with water, with the remainder consisting of continents and islands that together have many lakes and other sources of water that contribute to the hydrosphere. Earth's poles are mostly covered with ice that includes the solid ice of the Antarctic ice sheet and the sea ice of the polar ice packs. Earth's interior remains active with a solid iron inner core, a liquid outer core that generates the magnetic field, and a thick layer of relatively solid mantle. Earth gravitationally interacts with other objects in space, especially the Sun and the Moon. During one orbit around the Sun, Earth rotates about its own axis 366.26 times, creating 365.26 solar days or one sidereal year.[n 6] Earth's axis of rotation is tilted 23.4° away from the perpendicular of its orbital plane, producing seasonal variations on the planet's surface with a period of one tropical year (365.24 solar days).[45] The Moon is Earth's only natural satellite. It began orbiting Earth about 4.53 billion years ago. The Moon's gravitational interaction with Earth stimulates ocean tides, stabilizes the axial tilt and gradually slows the planet's rotation. Watch more: https://goo.gl/aU00y8 *** *** *** *** *** *** *** ************************************************ Please like and Subscribe to Watch more videos
Comments
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Two things:
1) Would the asteroid that killed the dinosaurs 65 million years ago still have collided with Earth Mk1? I think not, as the planet would have been in a different orbit.
2) If you can move Europa into Earth orbit to replace the moon, you can certainly stop the moon from leaving in the first place! -
Damn atheists. Basically what they are saying 'Noah David Abraham Moses Jesus and Muhammad message saying "Earth has a creator" is a lie.'
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Jees you folks miss the bloody obvious. It's as if that anti biologist 'Brian Cox' is becoming like the Spanish inquisition and banning free thought.
here is a simple question: are or are not menstrual cycles and tides tied to The Moon?
Of course they are.
The Biology of this planet is as clocked by the Moon as your PC is by some chip. -
why do you name it full hd when its quality is shitty as fuck? thx for uploading intresting content but come on!
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Rubbish!
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She said, "the earth would be different, had the moon forming impact not occurred".
The"'moon forming impact theory" is only a hypothesis (fantasy). It has not yet been confirmed, but she's already fantasizing over it. -
well the bright side of this there will be no more werewolves
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BomBaCloth
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The moon is made of green cheese. We all know this :P
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Sounds like an idea for a Star Trek episode with Captain Picard coming to save the day...
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Euh Mars is bigger than the earth , just saying .
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it clearly says discovery, not bbc
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full hd??
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rip moon. rip harambe.
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Why didn't the government let the people no about the boom that they put on the moon.
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Apparently the moon is man made and brought here by Eddie stobbard ?
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lies we didn't go to the moon how did they get past the Van Allen radiation belts? Haaaaaa to funny
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Any how Darwin didn't worry about the moon.
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Is that Patrick Stewart narrating?
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too much speculation stated as fact
48m 30sLenght
79Rating