Planetary Science
Cryovolcanism
Cryovolcanism refers to volcanic activity on icy celestial bodies, where volatile substances like water, ammonia, or methane erupt instead of molten rock. This phenomenon is observed on moons and dwarf planets in the outer Solar System, significantly influencing their geological landscapes.
Ocean
The ocean, also known as the global ocean, is the body of salt water that covers approximately 71 percent of the Earth's surface. This interconnected system is fundamental to life on Earth, regulating climate, shaping weather patterns, and supporting a vast array of biodiversity. It is traditionally divided into five major basins: the Pacific, Atlantic, Indian, Southern, and Arctic oceans.