National Geographic: Journey to the Edge of the Universe

The night sky,

We look up and think,

What's up there?

Where does?

When did you start?

We could stay forever, wondering ...

... or we can prepare us to see the universe for ourselves,

and travel as far as you can go.

To feel the tremendous heat of burning stars,

face the forces of strong cosmic collisions.

avoid dead stars

and super-hole mass insatiable black.

Witness the birth of new stars,

and to the limit of human comprehension.

We have to take a trip back in time to the early universe,

see with their own eyes, the moment when it all started,

o Big Bang.

You are soon?

So let's go,

a journey

to the limits of the universe.

TO TRAVEL LIMITS OF THE UNIVERSE

This is the beginning of space,

only 100 km above,

just an hour drive from home.

Down there, life goes on ,

traffic continues to walk,

shares are traded

and continue to be transmitted the same reality shows .

But we have to leave it all behind

and move to the limit of the universe.

First stop,

to take.

Twenty-seven American astronauts made this way before us,

twelve of which they walked on the Moon itself.

When the Apollo astronauts sent a message via radio,

the message about took a second to reach Earth,

even traveling at the speed of light, 300,000 kilometers per second.

So Mission Control heard him what was going on after it happened.

If there is a second difference between us and the nearest neighbor,

imagine the difference up to the Universe limit.

We do not turn back a few seconds,

but billions of years.

Less than 400 000 kilometers from Earth,

three days in a spacecraft.

It looks like a desert battlefield,

bombarded by millions of meteroritos and asteroids.

But now it's quiet.

Of course, there are no major collisions for millions of years.

The Apollo 11 lunar module.

For astronauts Appolo, the risks were high,

but the rewards were still higher.

See our planet,

as had never been seen,

walk

where no man had walked before

and visit another world,

a world destroyed by the deadly radiation from the sun.

It's just endless frozen lava,

piles of gray rocks uninteresting.

Apollo astronauts brought hundreds of them for scientists to analyze,

and found that these gray rocks uninteresting

after all they were not so uninteresting.

NASA scientists discovered that the rocks were super-heated,

evidence of a massive impact.

There are 4.5 billion years ago,

a wandering planet crashed into Earth,

and projected billions of tons of molten rock into space.

And that joined to form the Moon.

Until this discovery,

We thought that the moon does not was related to the Earth,

a space rock controlled by the powerful force of Earth's gravity.

Now we know that is made of the same material as our planet.

To take

He came from Earth.

The first steps of Neil Armstrong,

It seems to have been made yesterday.

And no wind here to make them disappear,

shall survive for millions of years.

It is time for us to take our giant leap,

further than any man has ever traveled.

Out of the darkness,

the goddess of love,

Venus.

The morning star, the evening star.

Venus is the planet of the system brighter Solar.

Its spectacular yellow clouds

reflect the light the sun.

A sister of our planet.

It has more or less the same size and the same Earth's gravity.

More spacecraft to Venus

tells us that these views clouds are made of deadly sulfuric acid,

that the planet's atmosphere

It is blocked by carbon dioxide.

Venus is a goddess angry.

The air is harmful,

intolerable pressure

and it is hot,

approximately 500 degrees Celsius.

Staying too long, we would be corroded, suffocated,

crushed and boiled.

Nothing can survive here.

Like this.

It is the unmanned Soviet probe Venera.

Their heavy armor is being eroded by the extreme atmosphere.

So beautiful Earth,

close up view of

Venus is the sister of Hell,

marked by hundreds of volcanoes.

All that carbon dioxide in its atmosphere is to retain the sun's heat.

This is global warming taken to the extreme.

Before that, maybe Venus was calm,

as the sister planet Earth.

If it's true,

this may be the future of our planet.

A future shaped by the sun.

But before we get to it,

We have it,

Mercury,

the smallest planet in the Solar System.

Approaching the sun too,

and this is what happens.

Temperatures here vary wildly,

night are 170 degrees below zero,

by noon,

400 are positive.

Burned, ice cream,

and covered with scars,

it seems that Mercury had a violent past.

A sonda espacial Messenger

It is telling us something strange.

For its size, this small planet has a powerful gravitational pull.

It must be heavier than it looks.

It's like a huge ball of iron

covered by a thin layer of rock,

the core of what once was a much larger planet.

So where's the rest of it?

Perhaps a wandering planet has shocked Mercury,

launching into space of its outer layers,

leaving the planet

almost entirely made of metal.

The sun,

in all its splendor mesmerizing.

Everything we do, is controlled by the sun.

All our lives depend on it.

Throughout history,

across cultures,

is the axis around which life revolves on Earth,

maturing our crops,

structuring our day,

inspiring our beliefs.

150 million kilometers from home,

a trip 20 years by plane,

turning it off,

so far away,

not we would know for eight minutes.

It's so big, it could contain a million Earths inside.

so heavy,

that its gravity controls the entire solar system.

We see it every day,

a familiar face in our sky.

Closely,

It is unrecognizable.

A turbulent sea of incandescent gas.

The thermometer rises above 5000 degrees.

Below the core,

should be tens of millions of degrees.

Hot enough to trigger nuclear reactions,

transforming million tons of matter into energy,

every second,

more than all the energy ever produced by mankind.

My home

we see this energy as light,

and feel it as heat.

But up close, there is nothing reassuring about the sun.

It is so full of activity Electrical and magnetic,

exploding these huge and incandescent gas ties,

called prominences,

each of which releasing more energy than 10 million volcanoes.

We could spend the earth by one of these ties

and still we would be tens of kilometers to spare thousands.

And when burst,

exposing the colder lower layers,

causing sunspots.

They are more fraction cooler than the surroundings,

this is why look black, but still warmer

than anything on earth.

They are also massive,

some of them at least 50,000 kilometers in diameter,

enough to swallow the Earth.

A solar flare,

a super hot gas flow electrified,

spreading deadly radiation through space.

But one day

Sun fuel

it will end.

Die.

When I die, will reap life on Earth.

The sun creates life

and destroy it.