End of the Earth in Universe (part 1 of 5)

http://www.youtube.com/watch?v=H7aWB6ph5Vg
Documentary about End of the Earth, Sun and universe. The future of the planet is closely tied to that of the Sun. As a result of the steady accumulation of helium at the Sun's core, the star's total luminosity will slowly increase. The luminosity of the Sun will grow by 10% over the next 1.1 Gyr (1.1 billion years) and by 40% over the next 3.5 Gyr.Climate models indicate that the rise in radiation reaching the Earth is likely to have dire consequences, including the loss of the planet's oceans. The Earth's increasing surface temperature will accelerate the inorganic CO2 cycle, reducing its concentration to levels lethally low for plants (10 ppm for C4 photosynthesis) in approximately 500 million to 900 million years. The lack of vegetation will result in the loss of oxygen in the atmosphere, so animal life will become extinct within several million more years.After another billion years all surface water will have disappeared and the mean global temperature will reach 70 °C. The Earth is expected to be effectively habitable for about another 500 million years from that point,lthough this may be extended up to 2.3 billion years if the nitrogen is removed from the atmosphere.Even if the Sun were eternal and stable, the continued internal cooling of the Earth would result in a loss of much of its CO2 due to reduced volcanism,nd 35% of the water in the oceans would descend to the mantle due to reduced steam venting from mid-ocean ridges.The Sun, as part of its evolution, will become a red giant in about 5 Gyr. Models predict that the Sun will expand out to about 250 times its present radius, roughly 1 AU (150,000,000 km). Earth's fate is less clear. As a red giant, the Sun will lose roughly 30% of its mass, so, without tidal effects, the Earth will move to an orbit 1.7 AU (250,000,000 km) from the Sun when the star reaches it maximum radius. The planet was therefore initially expected to escape envelopment by the expanded Sun's sparse outer atmosphere, though most, if not all, remaining life would have been destroyed by the Sun's increased luminosity (peaking at about 5000 times its present level).However, a more recent simulation indicates that Earth's orbit will decay due to tidal effects and drag, causing it to enter the red giant Sun's atmosphere and be vaporized.Possible alternatives to this fate include the purposeful displacement of an asteroid from the Kuiper belt, which would repeatedly fly close enough to Earth as to enlarge its orbit, thereby preventing the overheating of its surface. The lifespan of the biosphere could thereby be extended by 5 billion years.

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[kattykool1994]

Pfft. Whatever! In 5 billion year's time we'll have built a fleet of spaceships powerful enough to take us all to Europa, where we'll live while the sun stays as a red giant, and by the time it begins to turn into a white dwarf we'll have built an even better fleet of spaceships that can fly us straight through a worm hole and into a new solar system where we'll find an exact replica of plush, prehistoric Earth to live on.

Now, all of you, have a cup of tea and go to bed. Don't worry about it.

[coycanela2010]

5 theories how earth will end

1.meteor

2.death ray

3.laser

4.super nova

5.friezas death ball

[Arnoud1987000]

@kattykool1994 This is allready doen by the greys by removing the dinos and replacing it with monkey-aliens architecture (us)

The fun part is our brain is only capable of using 5% of its real power .....imagine what kind of beeins we allready are.. u need stuff like LSD to unlock more potential

[manfuckniggers]

@kattykool1994 this would have happened long ago if religion didn't exist. it is pure poison to mankind all it does is hold us back and kill us slowly and miserably . TRUE FACT

[peapeeman]

10 theories how earth will end 1. super kamehameha 2.gigantic meteor 3. laser ray 4.sun 5.black hole 6.cell's power 7.big ass nuke bomb 8. kid buu's vanishing ball 9.big fist 10.ultimate fart

[THEBENGALWWETHEME]

hopefully scientist would find something like another planet where there is an stable atmosphere and water for all of us

[Kornel1989able]

Good effects and interesting plot:)

[WorldofWarcraft98100]

with dinos i think the Ice Age killed the remains of the 1s that survived

[jsharps1000]

by the time something really happens that could take the humans and wipe them out it wont effect us to badly. like i mean sure it'll effect maybe a good little portion but over all the other portion to survive will be smart enough to reproduce no matter who it is. sure we cant over come war yet or any sort of fighting but we can handle our planet. when it comes to shit like that u see country's unite like japan and america wtf more do i need to say we will be fine.

[aHighschoolloser]

why does the t-rex have three fingers?

[kon007nic]

@kattykool1994 yes but i dont think we will lived those great discoveries :(

[lpsluver1000]

I saw this in class today :D:D