Ultra-sensitive satellite to look for earthquake precursors

China this month put into orbit its first seismo-electromagnetic satellite to observe earthquake precursors, paving the way for a ground-space earthquake monitoring and forecasting system. A Long March-2D rocket projected a 730-kilogram satellite christened Zhang Heng, after the Eastern Han Dynasty polymath who devised the world’s first “seismoscope” 1,886 years ago, into a sun-synchronous orbit […]