The first satellites placed in geostationary orbit were the synchronous communication(SYNCOM)satellites launched by NASA in 1963.
第一个放置在对地静止轨道的

1963
国航空暨太空总署发射的同步传输
.
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人-综合 
60秒 听力 2016年7月合集 These mechanisms would require huge amounts of electricity, which could be provided by solar panels or potentially even nuclear systems. Current designs estimate that it would take about 8 days to elevate an object into geostationary orbit.
这些机制需要大量
电力,这些电力可以由太阳能电池板甚至核系统提供。目前
设计估计,将物体提升到地球静止轨
大
需要 8 天。