今年3月14日,美航宇局正式宣布,绕太阳运行18年之久的先驱者9号卫星寿命已经终结。该卫星于1968年11月8日发射,重67公斤。原预期卫星只能工作6个月,出人预料的是6个月后,卫星继续向地面发送数据,直至1983年5月18日为止。航宇局阿姆斯研究中心的工程师为救活这颗卫星进行了许多 On March 14 this year, the U.S. Aeronautics and Space Administration officially announced that the life of satellite No. 9, the pioneer of 18 years of orbiting the sun, has come to an end. The satellite was launched on November 8, 1968, weighing 67 kilos. It was originally expected that satellites would only work for six months and unexpectedly six months later, satellites would continue to send data to the ground until May 18, 1983. Engineers at the NASA Arms Research Center have done a lot to save the satellite