Musk pondered the vastness of the universe, estimated to be 13.8 billion years old, and speculated on the fate of intelligent life forms on other planets. He raised intriguing questions about the potential for civilizations to self-destruct or be extinguished by external factors before achieving interstellar travel. “I wonder how many dead one-planet civilizations there are out there,” Musk mused, highlighting the fragility of life in the cosmos.