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Satellites capture images of Earth through remote sensing technology, using various sensors and instruments onboard. Optical sensors, such as multispectral and hyperspectral cameras, detect different wavelengths of light to create detailed images. Synthetic Aperture Radar (SAR) sensors use microwave signals to penetrate clouds and provide images regardless of weather conditions. Satellites orbiting Earth are equipped with these sensors and continuously scan the surface. The collected data is transmitted to ground stations, where it undergoes processing to generate high-resolution images. Some satellites have the ability to revisit specific areas frequently, capturing changes over time. As of my last knowledge update in January 2022, several satellites contribute to Earth observation, including Sentinel-2, Landsat series, and commercial satellites like WorldView-3. These satellites provide valuable data for applications such as agriculture, environmental monitoring, and disaster response. For the latest satellite imagery, I recommend checking dedicated platforms provided by space agencies like NASA, the European Space Agency (ESA), or commercial satellite imagery providers. They often offer access to updated and high-quality satellite imagery for various purposes.