New Horizons' trailblazing journey to the solar system's outermost frontier took it past the orbit of Mars today at 6 a.m. EDT , 78 days after the spacecraft launched.
新地平线打响了探索太阳系边疆的第一炮，而在今
美国东部时间早上6点，在发射了78后它成功跨越了火星轨道。
New Horizons' trailblazing journey to the solar system's outermost frontier took it past the orbit of Mars today at 6 a.m. EDT , 78 days after the spacecraft launched.
新地平线打响了探索太阳系边疆的第一炮，而在今美国东部时间早上6点，在发射了78后它成功跨越了火星轨道。
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