举世闻名的哈雷彗星已于1985年1月10日越过木星轨道。目前,彗星距离地球六亿一千一百万公里,正以每小时五千四百三十八公里的速度运行。科学家指出:哈雷彗星将于今年十一月越过火星轨道,年底通过地球轨道。届时,地面观测网和天上卫星一起对其进行科学观测与实地探测,这是二千多年以来观测史上最壮观的一次。 The world-famous Halley’s comet crossed the Jupiter’s orbit on January 10, 1985. At present, comets are 611 million kilometers from Earth and are operating at a speed of 5,438 kilometers per hour. Scientists point out that Halley’s comet will cross the orbit of Mars in November this year and will pass Earth’s orbit by the end of this year. At that time, the Earth Observatory will carry out scientific observation and on-the-spot exploration together with the heavenly satellite, which is the most spectacular observation in the history of more than 2,000 years.