Remote sensing refers to the acquisition of information about an object or phenomenon without being in physical contact with it. This is typically achieved using sensors that are located on platforms such as aircraft or satellites, which capture data about the object or phenomenon from a distance.

Remote sensing can be used to gather information about a wide range of things, including the Earth's surface, atmosphere, and oceans. This information can be used for various purposes, such as monitoring weather patterns, tracking changes in land use and vegetation, and detecting natural disasters.