The Earth Observing System (EOS) is a program developed by NASA to monitor and understand the Earth's climate and environment. It uses a series of satellites equipped with advanced sensors to collect data on various aspects of the planet, including temperature, vegetation, and atmospheric conditions. This information helps scientists study changes in the Earth's systems over time. EOS plays a crucial role in providing data for research on global warming, natural disasters, and land use changes. By analyzing this data, researchers can make informed decisions about environmental policies and improve our understanding of how human activities impact the planet.