八月的满月
(原标题: Full Moons of August)
2023-08-30
浏览次数: 15
8月1日，当太阳落山时，在近地点，也就是月亮轨道上的最近点，一轮满月升起。在西西里岛拉古萨东部地平线上密集的云岸上，这幅戏剧性的月出序列捕捉到了比平均水平更亮的月盘。这是2023年的第二个超级月亮，照亮了地球周围的夜空。2023年的第三次超级月亮也将在8月的夜晚再次出现在近地点。今晚太阳落山时升起的这一轮8月的第二次满月将被一些人称为“蓝月亮”，尽管散射的阳光使月球表面呈现出红色。蓝月亮被定义为一个日历月中的第二个满月，每2或3年才出现一次。这是因为月相需要29.5天，几乎是一个日历月，才能经历一个完整的周期。今晚八月的蓝月亮将出现在明亮的土星旁边。
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Near perigee, the closest point in its almost moonthly orbit, a Full Moon rose as the Sun set on August 1. Its brighter than average lunar disk was captured in this dramatic moonrise sequence over dense cloud banks along the eastern horizon from Ragusa, Sicily. Illuminating night skies around planet Earth it was the second supermoon of 2023. Yet again near perigee, the third supermoon of 2023 will also shine on an August night. Rising as the Sun sets tonight this second Full Moon in August will be known to some as a Blue Moon, even though scattered sunlight gives the lunar disk a reddened hue. Defined as the second full moon in a calendar month, blue moons occur only once every 2 or 3 years. That's because lunar phases take 29.5 days, almost a calendar month, to go through a complete cycle. Tonight an August Blue Moon will find itself beside bright planet Saturn.
© Gianni Tumino