Four scenarios of the end of the world
Nibiru. Planet X. Apocalypse Mayan calendar. Split. New Great Flood. Uncontrollable flame. Bible prophecy. Supervolcano. Wandering asteroid or comet. Every few years (or even months, depending on what part of the web you are accustomed to dwell), a new story, rumors or conspiracy theories are crazy, proclaiming the end of the world. Some applications are very specific; others are more blurred. But we do not live in a world in which myth and mysticism prevail over common sense; we know that we can separate the wheat from the chaff of the truth of myths, using the predictive power of science. And as far as we know, there are four scenarios of the end of the world, that is the earth, and they will happen one day, to the grandmother did not go. Ethan Siegel with Medium.com believes that this ultimate end.
The largest explosion ever happened on earth. Nuclear war and the subsequent damage to the environment - one of the possible end of humanity
The extinction of mankind
This is not just a prophecy - it is inevitable. Despite the fact that today we have more than seven billion people and the number is constantly growing, the current form of people live less than a million years old, and all the great apes live only a few million years. Evolution can seem sluggish current for our species, as measured in a single human life, but it becomes inevitable for millions of years. Earth changes, and the pressure on the different types is also changing, random genetic mutations occur. Some mutations are useful for the survival of the species under external pressure, and they are likely to be transferred together with the genes to future generations.
Speaking from the perspective of evolution, human beings - or homo sapiens - there is only a brief moment: at least half a million years. And as far as we know the path of evolution, just a few million years, people on the planet will not be
Which part of future generations of people retain these genes - it does not matter; even if millions of years the descendants of modern humans will still be walking on the ground, they are no longer human beings. The people themselves are faced with the pressure of a changing planet with limited resources, other people (in the form of nuclear, chemical or biological environment) and nature (in the form of disease). Will it be the fault of the catastrophe, asteroid will happen or not, the end of humanity is inevitable. We just die out in the world, and it does not matter, our descendants will survive or not. The geological and astronomical scale it will happen sooner rather than later, and will be the first "end of the world for us."
to Today on Earth the water in the oceans, usually boils when it comes lava or some other super-heated material. But in the distant future, solar energy will be enough to boil water on a global scale
Boiling Earth's oceans
We are seriously lucky that we were on the planet is of such size and weight, with the atmosphere and at the same distance from the star, as it turned out. Only the right combination of all these parameters allowed emerge planet with life and an abundance of liquid water on the surface. Over billions of years the Earth has the world covered by oceans, with simple and complex life that live in the ocean and just recently got out on the land. However, due to the future evolution of our sun, our oceans are not destined to be forever here. When helium accumulates in the Sun's core, an area in which fusion occurs, it will expand, with all the consequences for us.
This cross-section shows different surface regions, and our solar interior, including the kernel, where fusion takes place. Time goes by, and once burning helium nucleus region expands, and at the same time will increase and the energy output of the sun
Over time, the sun heats up and expands, becomes brighter and will radiate more energy. After one or two billion years, no more than the amount of energy released by the sun to rise to a certain critical point high enough so that the amount of energy that falls into a molecule of water in Earth's oceans during the day, it boil. Our planet will be more similar to Venus than the Earth, and will be completely unsuitable for life on the surface. However, certain simple organisms can get on top of the clouds, but we know life still end will come. Space experiment on growing complex organisms come to its natural end.
After about five to seven billion years, the hydrogen is exhausted in the core of the sun. The inner part of the light will decrease, heat up and begin the synthesis of helium. And then the sun will expand, vaporize the Earth's atmosphere and fry the planet's surface
depletion to the barren land
Thought boiling oceans - is that bad? How about the prospect that every atom of the atmosphere will be thrown out of our world? All ever living on the surface of the turn to ashes? The traces left by living things, will turn to dust? If there is enough heat and energy, it can be done with any world, and Mercury, the closest planet to the Sun, is a vivid example. It will take another five to seven billion years - and the same fate befall the Earth, when the Sun is over hydrogen fuel. And then the core is compressed, heat up and begin to synthesize helium, giving off more energy. In this state, the sun will become a red giant star burns helium, and nothing on earth can stand against him.
When the Sun becomes a red giant true, the Earth itself will not be swallowed or absorbed, it will fry
Sun will increase by hundreds of times compared to its current diameter and become thousands of times brighter than it is today. The earth will be almost completely shaved, and push away from the Sun; Mercury and Venus will be fully absorbed. Later, the Sun dies, reduced to a white dwarf, and the Earth will be fried residue floating in space on its orbit around the star corpse.
Even a single gravitational interactions with large masses passing could lead to a breach of the orbit and the release of a large body of the solar and planetary system
swallowed or thrown out?
Purified from life, cooked, and then charred and drained, sterile quadrillion cosmic rays, our planet will continue to exist. It will remain untouched, wandering around the corpse of our star, until one of the following events:
- any object will collide with Earth, destroying or absorbing it, depending on the size and speed of the collision. Our galaxy - a rather large place, but clashes occur regularly throughout the universe.
- massive objects pass near Earth, throw it out of the solar system and the galaxy, after which she will wander alone forever in the emptiness of space.
- Or it will remain attached to the corpse of the sun and slowly, very slowly, will spiral down to its stellar corpse, which is then absorbed by the black dwarf.
When the sun becomes a black dwarf, if there is nothing to throw and do not collide with the remains of the Earth, gravity will push the planet to the former luminary
And then the world will end exactly. All of these four scenarios - not just talk, it is one hundred percent forecast for the future of our planet, backed by our best scientific achievements. Distant future the Earth is known; the near future we will have to create their own. Create the future, solidly entrenched in the scientific reality, using the best knowledge and the most successful theory in order to ensure the security, freedom and prosperity of mankind - it's the ultimate dream of scientific knowledge society. It is hoped that we will be able to postpone the "end" of the world as far as possible in the future.