色泽经过夸大的蓝月

2021年8月31日

A Blue Moon in Exaggerated Colors
Image Credit & Copyright: Robert Fedez

Explanation: The Moon is normally seen in subtle shades of grey or gold. But small, measurable color differences have been greatly exaggerated to make this telescopic, multicolored, moonscape captured during the Moon’s full phase. The different colors are recognized to correspond to real differences in the chemical makeup of the lunar surface. Blue hues reveal titanium rich areas while orange and purple colors show regions relatively poor in titanium and iron. The familiar Sea of Tranquility, or Mare Tranquillitatis, is the blue area toward the upper right. White lines radiate across the orange-hued southern lunar highlands from 85-kilometer wide ray-crater Tycho at bottom right. The full moon that occurred earlier this month could be counted as a seasonal blue moon because it was, unusually, the third of four full moons to occur during northern summer (and hence southern winter). The featured 272-image composite demonstrates that the full Moon is always blue, but usually not blue enough in hue to ooh.

Almost Hyperspace: Random APOD Generator

Tomorrow’s picture: galactic ghosts

色泽经过夸大的蓝月
影像提供与版权: Robert Fedez

说明: 在人类的视觉上，月亮正常的色彩是柔和的多层次灰或金色。不过，在这幅摄于满月期间的多色月面望远镜影像里，微小但可分辨的色彩差异经过极度夸大。月表色泽的差异，对应不同的化学组成。蓝色区富含钛，而橙和紫色区，钛和铁的含量较低。月面右上角的泛蓝区域，是我们很熟悉的宁静海。月面右下角橙色南方高原上的白色辐线，则源自85公里宽的第古坑。出现在这个月前一段时日的满月，有这季节的蓝月之称，因为它是北半球这个夏季（南半球冬季）4个满月中的第三轮满月。这幅由272张照片组合而成的主题影像，证实满月的真实色彩偏蓝，不过不会蓝到会让我们发出惊叹。

几乎超空间：随机APOD生成器

明日的图片: galactic ghosts