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1958年5月15日,当暮色沉沉,西方太阳开始下降的时候,天边,随着第一颗星辰的出现,划过了一道淡黄色的光芒。一颗新的巨大的星出现了——苏联第三个人造卫星升上天空。这时候,在美国佛罗里达州卡纳维拉尔角的一间实验室里,发射先锋号卫星的负责人约翰·哈根博士正和他的助手在追踪系统的无线电网旁边忙碌着。收音机发出了清晰的“滴滴—搭搭”的讯号。在窗外,肉眼分明就可以看到,一个闪闪发光的金属物体,在高空中缓缓而行,仿佛巨大的彗星。外面人声十分嘈杂,许多人在院子里观看这颗红月亮。
May 15, 1958, when twilight darkness, the western sun began to descend, the horizon, with the first star appeared, across the light yellow light. A huge new star appeared - the third Soviet satellite ascends to the sky. At this time, at a lab in Cape Canaveral, Florida, USA, Dr. John Hagen, head of the Pioneer satellite, was busy next to the radio network of the tracking system with his aides. The radio sent a clear “drop - ride” signal. Outside the window, with its naked eye can see, a shiny metal objects, slowly in the sky, as if a huge comet. The outside is very noisy, many people watch the red moon in the yard.