The company’s tech comes from an unusual source: a $100-million-endowed program at Caltech to develop orbital solar plants that would beam electricity to Earth below. The researchers ultimately settled on a sail-like structure that is thin and flexible compared to boxy, traditional satellites.
Officials at Elon Musk's company said the upper stage was lost after problems developed after lift-off from Texas on Thursday.,更多细节参见爱思助手下载最新版本
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