为什么只有早晚才能看到水星?

• 出 处: 军事文摘
• 发表日期: 2015年12期

水星在比地球更靠近太阳的地方绕太阳运动,我们观察水星,就要朝着太阳的方向望。白天,水星确实像太阳一样在我们头顶的天空中,但由于天空太亮,水星的踪影显现不出来,我们也就看不到它了。深夜,太阳在地球的另一面,我们也就背离了水星的方向,也不会看到它。所以,我们只有在日出前的东方和日落后的西方才能看到水星。

Mercury moves around the sun in a place closer to the sun than the earth. When we observe Mercury, we must look toward the sun. In the daytime, Mercury is indeed in the sky above our head like a sun, but because the sky is too bright, the trace of Mercury can not be seen and we can not see it. Late at night, the sun is on the other side of the planet, and we are out of Mercury’s direction and we will not see it. Therefore, Mercury can only be seen in the East before sunset and after the West in the sun.