The scientist said, what is the future Solar system after the destruction of humanity

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2018-05-23 21:00:07

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The scientist said, what is the future Solar system after the destruction of humanity Source:

Forbes published an article by astrophysicist Ethan Siegel, in which a scientist predicts what will see the sky the inhabitants of the milky Way ten billion years after humanity will perish from the Big Bang. Siegel notes that the sky will be very different from the present.

According to the scientist's calculations, there will be more red giants and milky Way galaxy will become an elliptical halo instead of disk. In addition, the space will be less dust and less gas and regions with star formations. The main reason for this outcome astrophysicist calls the merger of the milky Way with the Andromeda galaxy, which will occur approximately four to seven billion years, and the closest other galaxies.

Illustration of how will look the new galaxy Lacomeda after the collision of the milky Way with the Andromeda galaxy in 4 to 7 billion years

If a new galaxy appears a new sentient beings, they will not be able to see anything outside of a star cluster even with telescopes, because the galaxy from the other systems to be farther away from ours.

Many experts believe that in the future the Universe will be less gas and dust, but most of the old stars (which are located below the main sequence on the diagram of Hertzsprung — Russell). In the world will be much less noticeable areas of active star formation within a Galaxy (at the time, the United systems of the milky Way and the Andromeda galaxy) the stars will be located mainly within a large elliptical halo and not the disk.

Siegel also puts forward the hypothesis that reasonable inhabitants of our galaxy will be asked other questions about space. They will not have evidence that the universe is expanding because distant galaxies will be invisible and will not be ideas about the Big Bang.

"In the distant future civilization will need to look at hundreds or even thousands of times more to see even the closest objects outside of our galaxy," — says astrophysicist.

In the next four billion years the milky Way needs to swallow its galaxy satellites the Large and Small Magellanic Clouds. In five billion years, when all the small objects will be absorbed, should start merging the milky Way and the Andromeda Nebula.

Less than eight billion years, the Sun will leave the main sequence, an increase in size to 300 times. By this time the Earth will be swallowed by the sun, or turn into dry rocky planet without an atmosphere. The red giant phase will culminate in a reset of the outer layers of the Sun and the formation of planetary nebulae, the center of which will be white dwarf the size of a modern Land. Such objects are in fact the final stage of evolution of stars of solar mass, too easy to turn into black holes. In stable condition the white dwarf is able to be tens of billions of years.

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