To the best of man’s knowledge, Earth is the only planet known to sustain life. What if that could change? The universe is still being mapped out and scanned, and our ability to perceive the presence of distant planets is increasing. Whether by discovering an already habitable planet or by consequence of terraforming one to suit life, Earth may not stand alone forever.
The technology and energy required to start terraforming Mars, Venus, or a moon is a major scientific and engineering challenge. Can a Type 0 civilization muster the tools for the task? Using microorganisms or self-replicating nanobots may provide options. Michio Kaku explains what different levels of civilizations are capable of accomplishing, such as terraformation and weather control:
If the technology and resources were available now, which planetary body would you terraform?