The scientist told, what future awaits the solar system after the destruction of humanity

Forbes edition published an article astrophysicist Ethan Siegel, in which the scientist predicted the way in which the inhabitants of heaven will see the Milky Way in ten billion years after mankind will perish from the Big Bang. Siegel notes that the sky will be very different from the present.

The scientist told, what future awaits the solar system after the destruction of humanity

Scientists have calculated that there will be more red giants, and the Milky Way galaxy will become an elliptical halo instead of the disk. Furthermore, in space will be less dust and gas and less areas with star formations. The main reason for this outcome astrophysicist called merger of the Milky Way with the Andromeda galaxy, which will take place in about four to seven billion years, as well as other nearby galaxies.

The scientist told, what future awaits the solar system after the destruction of humanity

An illustration of how it will look new galaxy Mlekomeda after the collision of the Milky Way with the Andromeda Galaxy in 4-7 billion years

At the same time, unless the new Galaxy will be new intelligent beings, they can not see anything outside the star cluster, even with telescopes, as the galaxy of other systems will all continue to move away from our own.

Experts believe that in the future the universe will be less gas and dust, but most - of old stars (located below the main sequence in the Hertzsprung - Russell). The world will be much less noticeable areas of active star formation, and within the galaxy (at the time - a combined system of the Milky Way and the Andromeda Galaxy) stars will be located mainly within a large elliptical halos, and not drive. Siegel also hypothesizes that reasonable inhabitants of our galaxy will be asked another question about the cosmos. They will have no evidence that the universe is expanding, as distant galaxies will be visible, and there will be no idea of ​​the Big Bang.

"In the distant future of civilization will need to look into the hundreds or even thousands of times farther to consider even the closest objects outside our galaxy," - says astrophysicist.

In the next four billion years the Milky Way must absorb its satellite galaxies Large and Small Magellanic Clouds. In five billion years, when all the small objects will be absorbed, to begin the merger of the Milky Way and the Andromeda Galaxy.

Less than eight billion years the Sun will leave the main sequence, an increase in size up to 300 times. By this time, the Earth will be absorbed by a luminary or become dry rocky planet with no atmosphere. Red giant phase is complete reset of the outer layers of the Sun and the formation of a planetary nebula, the center of which is placed a white dwarf the size of a modern-day Earth. Such objects are in fact the final stage of the evolution of the solar mass stars, too easy to turn into black holes. In steady state, the white dwarf is able to be tens of billions of years.