Introduction to interstellar migration

Interstellar migration, astronomical scientists find planets suitable for human habitation in the universe or create conditions for human migration to other planets. In the past, some researchers suggested that the number of early immigrants was several hundred, but scientists thought it necessary to discuss this issue again from the perspective of human population genetics. Too few people can't form a basic breeding group, and the number of immigrants also determines the size of the spacecraft needed. According to foreign media reports, if human beings want to emigrate to other planets, they need a big spaceship. Cameron Smith, an anthropologist at Portland State University in Oregon, estimated that the original immigrant population was about 40,000. Such a large population can diversify the colonial population, which is statistically significant and can meet the needs of long-term space flight.