|
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 這條路盡頭的亮點是什么？是火星。去年5月是幫助朋友及家人辨認火星的絕佳月份，不僅是因為我們的鄰近行星正處于15年來最明亮的時刻，而且?guī)缀跽矶伎梢?。在這個月，火星和太陽相對我們地球的家教接近180°，火星接近近地點。就軌道而言，火星正在接近其橢圓軌道上的近日點，而此時地球幾乎在火星和太陽之間，這種排列被稱為近日點沖。在觀賞此天象時，當太陽在西方落下，在天空另一邊的橙色火星將在東方升起?；鹦菍郎弦雇淼奶炜?，接近午夜時到達最高點。當太陽開始從東方升起時，火星則在西方落下。這幅呈現(xiàn)紅色行星的影像拍攝于去年5月中旬，地點位于美國猶他州摩押附近拱門國家公園內(nèi)。 近期文章： Astronomy Picture of the Day——布滿塵埃的七姐妹 |
|
|
