Why 150 People Wouldn’t Be Able to Colonize Another Star System
Sending just 150 people to colonize another star system sounds doable in sci-fi, but real science says the mission would fall apart fast because the group is simply too small to stay healthy, stable, and genetically diverse over generations. With so few people, one accident, illness, or malfunction could wipe out crucial skills or entire family lines, and even small social conflicts could spiral into long-term chaos in a closed environment. Genetic problems would build up quickly, making future generations weaker and more vulnerable without fresh DNA coming from outside the colony. The crew would also struggle to maintain thousands of essential tasks—engineering, medicine, farming, repairs—because losing even one expert could jeopardize the whole mission. Credit to: BRIGHT SIDE Series