Terraforming is the process of modifying a planet or moon's environment to make it more Earth-like and suitable for human habitation. This can involve altering the atmosphere, temperature, and surface conditions to support life. Scientists often consider celestial bodies like Mars and Venus as potential candidates for terraforming due to their similarities to Earth. The concept of terraforming raises various scientific, ethical, and technological questions. Techniques may include introducing microorganisms to produce oxygen, creating artificial magnetic fields, or using greenhouse gases to warm a planet. While still largely theoretical, terraforming remains a topic of interest in astrobiology and space exploration.