Satellite observations, spatial modeling, and geoinformatics have become indispensable tools in monitoring and managing Earth’s rapidly changing systems. Remote Sensing, GIS & Digital Earth enables real-time tracking of environmental variables—from forest cover loss and glacier retreat to urban expansion and wildfire dynamics. These technologies integrate multi-source data across scales, offering both macro- and micro-level environmental insights. The concept of a “Digital Earth” envisions interconnected geospatial platforms that support decision-making through visualization, simulation, and predictive analysis. Informed by AI and machine learning, spatial analytics is now driving applications in disaster response, water management, biodiversity conservation, and carbon accounting. As geospatial literacy expands across disciplines, Remote Sensing, GIS & Digital Earth is shaping how governments, scientists, and communities visualize planetary change and respond to sustainability challenges.