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在寻找外星人的活动中,火星人始终是人们最热议的话题。火星是一个十分类似于地球的天体。它与太阳的平均距离是1.5天文单位,是地球与太阳距离的1.5倍。它的自转周期是24小时37分22.6秒,仅比地球长不到40分钟;它绕太阳公转一周是687天,差不多是地球的2倍。它的轨道面与赤道面的夹角是23°59′,与地球的23°27′非常接近,所以它也有一年四季之分……正因为这样,人们长期以来一直认为,火星是最可能具有与地球一样世界的星球。
Martians have always been the hottest topic in finding aliens. Mars is a celestial body that is very similar to Earth. Its average distance from the sun is 1.5 astronomical units, which is 1.5 times the distance between the earth and the sun. Its rotation period is 24 hours, 37 minutes and 22.6 seconds, which is only 40 minutes longer than the earth; it revolves around the sun a week is 687 days, almost twice the earth. Its orbital plane and the equatorial plane have an angle of 23 ° 59 ’, which is very close to the Earth’s 23 ° 27’, so it also has points all year long ... It is for this reason that it has long been believed that Mars is most likely Planet with the same world as the earth.