季度的卫星
(原标题: Quarter Moons)
2023-10-21
浏览次数: 18
新月和满月之间的一半是月亮的第一个四分相。这是它绕月轨道运行的四分之一。在第一阶段，月亮的一半可见面被阳光照亮。在月亮的第三个四分之一阶段，满月和新月之间的一半，阳光照亮了可见的月球盘的另一半。在第一阶段和第三阶段，月相的明暗线，或者说分隔月夜和月日的阴影线，从中间向下延伸。在明暗分界线附近，长长的阴影使月球上的陨石坑和山脉清晰地显现出来，使四分之一阶段成为观察月球的好时机。但如果你错过了一些，2022年期间所有的四分之一月相和它们的日历日期都可以在这组精心设计的长焦照片中找到。当然，今晚你可以看到上弦月。国际节日：赏月夜
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Half way between New Moon and Full Moon is the Moon's first quarter phase. That's a quarter of the way around its moonthly orbit. At the first quarter phase, half the Moon's visible side is illuminated by sunlight. For the Moon's third quarter phase, half way between Full Moon and New Moon, sunlight illuminates the other half of the visible lunar disk. At both first and third quarter phases, the terminator, or shadow line separating the lunar night and day, runs down the middle. Near the terminator, long shadows bring lunar craters and mountains in to sharp relief, making the quarter phases a good time to observe the Moon. But in case you missed some, all the quarter phases of the Moon and their calendar dates during 2022 can be found in this well-planned array of telephoto images. Of course, you can observe a first quarter Moon tonight. International: Observe the Moon Night
© Marcella Giulia Pace