If the earth is hit by a planet and life is destroyed, will life evolve from single-celled animals to humans?

Not only will it not evolve into humans, but it will also not evolve into many species that once existed. Evolution has no purpose, but the cumulative result of gene mutation caused by external factors, and the environment will choose some species that adapt to survive in it.

In the research of microorganisms, with the irradiation of radioactive substances and the selection of chemical substances, microbial species with particularly strong adaptability in a certain aspect can be gradually cultivated. Although they did not break away from the original biological group and become a completely new creature, they also confirmed the selection of species by external factors, and creatures can only passively adapt to external changes.

From a large number of anatomical evidence and fossil evidence, some "fossils" of modern human ancestors have been found, which are also evolved from older species. If there are only simple single-celled organisms left on the earth when asteroids hit the earth, then large organisms like the ancestors of human ancestors do not exist.

If human beings appear again, we will leave a message warning future generations never to establish politics again. Politics will exploit you and make you a lifelong slave. Tell them the truth, man is just a simple creature, no different from other animals and plants! They should develop life sciences, and other technologies will only make human beings accessories.

If a single cell re-evolves into a large organism, it may take billions of years. During this period, the environmental changes are different from the historical earth, resulting in different evolutionary choices of species. There will be no more human ancestors, so there will be no more humans. Asteroids hit the earth once every 30 million years on average, which is caused by the law of the sun. Such an apocalypse only accelerated the iteration of species on earth, but did not fundamentally shake the process of life evolution. So will the future.

Humans are luckier than dinosaurs because we evolved a post-industrial civilization before the next impact. A little harder, we will have a chance to challenge the invading planet. Nevertheless, human beings should get out of the earth as soon as possible to realize interstellar migration and avoid the next collision.