European Union 10 August 2025 - 28 January 2026

Every day, hundreds of eyes in the sky are quietly observing Earth. From high above, satellites track hurricanes forming in the ocean, measure the dwindling ice at the poles, and even count crops growing in fields. This complete guide breaks down how this space-based monitoring works, its evolution over time, and why it matters. We’ll explore the major ways satellite Earth observation is used – from environmental protection and climate change tracking to agriculture, disaster response, urban planning, and national security – and highlight the key players. We’ll also cover the latest developments to show how space technology is watching our planet right now. Satellite Earth monitoring means using satellites orbiting our planet to collect information about Earth’s surface, oceans,