Satellite Imagery: Principles, Applications, and Future Trends
The first space images came from a U.S. V-2 rocket in 1946 at 105 km altitude. Explorer 6 captured the first satellite photo of Earth in 1959. By 2023, over 2,500 satellites had launched, a 25-fold rise since 2010, driven by small satellite constellations. Open data releases and platforms like Google Earth Engine have expanded public access to satellite imagery.