Will the earth still exist in four billion years?

At the beginning of the 20th century, astronomer Sliber first discovered the phenomenon of galaxy redshift. According to the lateral spectrum, the luminous colors of objects are different, which depends entirely on whether they are near or far away from us. Red shift means far, purple shift means near. Based on 19 13, Sliber discovered this phenomenon.

Scientists observed that the Andromeda galaxy was purple and approached the Milky Way at a speed of 120 km per second. If this theory is correct, the two galaxies will merge into a larger elliptical galaxy after about 7 1 year. In fact, in this galaxy collision, the galaxy contains stars and other celestial bodies, and there will be no real physical collision contact, because the galaxy itself is extremely scattered. For example, the nearest star, proxima centauri, is even 4.2 light years away. Theoretically, our solar system may be released from the merged galaxy in this collision, and may even become a part of Andromeda galaxy in the early stage of galaxy collision. However, because the distance between the stars is very far, this event will not have any negative impact on the solar system itself.

However, in another four billion years, the sun will enter the red giant stage, so the earth at that time will no longer be suitable for survival. If humans can complete the interstellar migration plan and continue it, it is very likely that they will witness the whole process of the collision between two galaxies, and there is a great chance that this collision will form a larger super black hole in the universe that is enough to set a new record.