International Earth Rotation and Reference Systems Service (IERS)

The International Earth Rotation and Reference Systems Service (IERS) is an organization that monitors the Earth's rotation and maintains precise measurement standards for global reference frames. It tracks changes in the Earth's rotation due to natural factors, like seismic activity and atmospheric conditions, and provides data that are crucial for navigation, satellite operations, and astronomical observations. By coordinating global efforts to maintain accurate time and positioning systems, IERS helps ensure that our understanding of Earth's dynamics and our technological systems remain reliable and consistent.