China‘s first high orbit remote sensing satellite, Gaofen-4, was sent to space on Tuesday. Gaofen-4 can continuously observe a disaster because it moves synchronously with the earth. The satellite can see the entire area of Beijing and Tianjin at a glance. Gaofen-4 is orbiting 36,000 kilometers away from the earth. Gaofen-4 has a designed lifespan of 8 years. The goal of the Gaofen series is to provide all-weather, 24-hour service covering the globe.