Remote sensing allows you to view and observe conditions and data about the Earth and the oceans that you would never be able to see from the ground or in a laboratory. With remote sensing, you can map forest fires and fight them more effectively or observe land usage over large areas. Meteorologists use remote sensing to determine weather patterns and make predictions, while geologists rely on remote sensing to watch volcanoes and track seismic changes. Oceanographers map the ocean floor and watch coastal erosion and tidal changes with remote sensing as well. It's a valuable tool that gives you rich insight on how the planet operates and changes.