难道真的美国宇航局和SETI天文学家探测木星最大的卫星，木卫三，一，在1980年的外星人信号？
Did NASA and SETI astronomers actually detect an alien signal from one of Jupiter's largest moons, Ganymede, during the 1980's?
旅行者1号于1977年发射升空，至今已经完成了探测木星和土星这两颗巨行星的初始任务，并且还在不断传回信息数据。
Launched in 1977, Voyager 1 has accomplished its initial goals of exploring the giant planets Jupiter and Saturn and is still sending back information.
1977年发射的“旅行者一号”太空探测器发回了木星和土星的壮观图像，然后飞出太阳系，执行前往恒星的单程任务。
The space probe, Voyager I, launched in 1977, had sent back spectacular images of Jupiter and Saturn and then soared out of the Solar System on a one-way mission to the stars.
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