Remote sensing satellites are launched into space to observe and gather data about the Earth. They use sensors and cameras to capture images and information about land, water, vegetation, and atmosphere. These satellites work on the principle of detecting reflected or emitted radiation from the Earth’s surface. Applications include agricultural crop monitoring, weather forecasting, resource mapping, and disaster management. For example, they provide real-time data during floods or cyclones for rescue operations. Remote sensing is vital for sustainable development and scientific research.