法国天文学家已用强激光束建造一种人造星体 ,可使地基天文学出现革命性变化。原子能委员会皮埃尔·拉特实验室的研究人员将光束聚焦在离地面约 90 km中大气层的一点上。该星体是激光束激发钠原子所发射的荧光。研究者认为 ,此项技术可用于天文观察中避免大气湍流的影响。空气 French astronomers have built a man-made body with intense laser beams that revolutionize ground-based astronomy. Researchers at the Atlet Energy Commission’s Pierre Lart Laboratory focused the beam a little over the atmosphere about 90 km above the ground. This star is the fluorescence emitted by a laser beam that excites sodium atoms. The researchers believe that this technique can be used in astronomical observations to avoid the effects of atmospheric turbulence. air