9. The Clouds of Titan
Saturn’s moon Titan is shrouded in thick clouds and features lakes filled with liquid methane and ethane instead of water. Scientists are fascinated by the possibility of exotic life forms that could thrive in these hydrocarbon-rich environments, using methane much like Earth life uses water. Upcoming missions, such as the Dragonfly drone, aim to explore Titan’s skies and surface, searching for clues about life’s adaptability. Learn more from NASA.