阿尔卑斯山脉上空的月球和木星
2019 September 2
The Moon and Jupiter over the Alps
Image Credit & Copyright: Giorgia Hofer (Cortina Astronomical Association)
Explanation: What are those bright lights in the sky ahead? When hiking a high mountain pass in northern Italy three weeks ago, a conjunction between our Moon and the distant planet Jupiter was visible as both rose together in the southwest after sunset. The picturesque mountains in the distance are Tre Cime di Lavaredo (Three Peaks of Lavaredo), a UNESCO World Heritage Site and three of the best known mountain peaks in Italy, the Dolomites, and the entire Alps. In the foreground on the left is Locatelli Hut, a refuge for tired hikers as it is located over an hour from nearest parking lot. The bright sky object on the upper left is Saturn. The entire scene was captured on a single 8-second exposure. Jupiter and Saturn will remain prominent in the western sky after sunset this month, while the Moon, in its monthly orbit around the Earth, will pass near Jupiter again in about four days.
阿尔卑斯山脉上空的月球和木星
影像来源与版权: Giorgia Hofer (Cortina Astronomical Association)
说明:前方天空中那些明亮的灯光是什么?三周前,当我在意大利北部的一个高山隘口徒步旅行时,看到了日落后在西南方同时升起的木星合月。远处风景如画的山脉是联合国教科文组织世界遗产地-拉瓦雷多三尖峰,那是意大利最著名的三座山峰,白云石山脉和整个阿尔卑斯山脉。影像左侧前景中的是洛卡特利小屋,是一间为疲惫的徒步旅行者准备的避难所,因为它位于距离最近的停车场有超过一个小时的路程。影像左上方的明亮天体则是土星。整个场景是在时长为8秒钟的单次曝光下拍摄的。本月日落后,木星和土星将仍在西方的天空中闪耀,而每月绕地球运行一周的月球将在大约四天后再次经过木星附近。
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[…] 说明: 月球下方是什么?木星和它的大卫星。地球上的许多观星者,在6月中旬见到了月亮几乎从木星前方通过的近合景观,如这幅摄于西班牙Morón de la Frontera镇的单曝光主题影像所示。影像里,左侧有受到阳光直射而过度曝光的月牙,而右侧为受到微弱地照光照耀的月球夜面。在月亮的下方,可见到木星和从左到右斜排的明亮伽利略卫星:木卫四、木卫二、木卫一(离木星太近,很难分辨)和木卫三。事实上,木卫四、木卫三和木卫一皆大于月球,只有木卫二略小。目前NASA的朱诺号航天器正在绕行木星,并且刚在1星期前近距离飞越木卫一。如果你今晚仰望夜空,将再次见到视角上相邻的这2颗最明亮的天体,因为今晚月亮与木星再次发生近合。 […]