Remote sensing is the science of gathering and processing information about an object or phenomenon from a distance using airborne or spaceborne technologies. It involves using sensors to collect data from electromagnetic radiation emitted, reflected, or diffused by the object or phenomenon being observed. The data is then analyzed to identify characteristics, features, and patterns of the object or phenomenon being studied. Remote sensing is used in many applications, including Earth sciences, oceanography, hydrology, climate monitoring, ecology, and forestry.