Experts from Columbia University talked about how life on Earth, and then our galaxy, will disappear, writes Space.com. It turns out that by cosmic standards, the Milky Way is not long.
Galaxies will collide
The Big Bang theory that explains the beginning of the universe is generally accepted, but not the only cosmological model. According to her, after the Big Bang, a cloud of dust and gas was formed, from which the Universe was formed nine billion years later.
Earth is in the solar system, and that is in the Milky Way galaxy, which is part of the universe. All objects are mobile and interact with each other.
Several decades ago, scientists found that our galaxy is moving towards the Andromeda galaxy at a tremendous speed. Their collision will occur in 2.5 billion years, after which both galaxies will cease to exist. This is how it will look, according to experts from NASA and the European Space Agency:
However, the population of the Earth should not worry - life on the planet will disappear earlier. According to scientists, in 1 billion years the Sun will emit too much heat, because of which the reserves of water on the Earth will disappear, and with them all living organisms.
Later, the Sun will expand, become hundreds of times larger in volume, turn into a Red giant and absorb other celestial bodies located at a short distance from it. After that, the star will shrink and become a White Dwarf.
Promotional video:
Ksenia Shestakova