South Korea's defense ministry said Seoul has launched a new military spy satellite from the U.S. space base at Cape Canaveral in Florida using a SpaceX Falcon 9 rocket, South Korean news agency Yonhap reported.
The satellite is a synthetic aperture radar (SAR) that works by sending microwave signals to Earth, which are then reflected back, creating a detailed radar image, although it looks different from the satellite images we are used to seeing.
Unlike satellites that use optical cameras, SAR satellites do not need a light source such as the sun, so they can operate at night. They are immune to weather conditions that can obscure optical satellite images.
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