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Road to Mars Image Credit & Copyright: John Chumack Explanation: What's that light at the endof the road? Mars. This is a good month to point out Mars to your friends andfamily because our neighboring planet will not only be its brightest in 15years, it will be visible for much of night. During this month, Mars will beabout 180 degrees around from the Sun, and near the closest it ever gets toplanet Earth. In terms of orbits, Mars is also nearing the closest point to theSun in its elliptical orbit, just as Earth moves nearly between it and the Sun-- an alignment known as perihelic opposition. In terms of viewing, orange Marswill rise in the east just as the Sun sets in the west, on the opposite side ofthe sky. Mars will climb in the sky during the night, reach its highest nearmidnight, and then set in the west just as the Sun begins to rise in the east. Thered planet was captured setting beyond a stretch of road in Arches NationalPark in mid-May near Moab, Utah, USA. 通往火星之路 这条路尽头的亮点是什么？是火星。去年5月是帮助朋友及家人辨认火星的绝佳月份，不仅是因为我们的邻近行星正处于15年来最明亮的时刻，而且几乎整晚都可见。在这个月，火星和太阳相对我们地球的家教接近180°，火星接近近地点。就轨道而言，火星正在接近其椭圆轨道上的近日点，而此时地球几乎在火星和太阳之间，这种排列被称为近日点冲。在观赏此天象时，当太阳在西方落下，在天空另一边的橙色火星将在东方升起。火星将会爬上夜晚的天空，接近午夜时到达最高点。当太阳开始从东方升起时，火星则在西方落下。这幅呈现红色行星的影像拍摄于去年5月中旬，地点位于美国犹他州摩押附近拱门国家公园内。 近期文章： Astronomy Picture of the Day——布满尘埃的七姐妹 |
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