2025年3月15日
Tololo Totality
Image Credit & Copyright: Petr Horálek/CTIO (Cerro Tololo Observatory) /AURA/NSF/ NOIRLab
Explanation: On March 14 the Moon was Full. In an appropriate celebration of Pi day, that put the Moon 3.14 radians (180 degrees) in ecliptic longitude from the Sun in planet Earth’s sky. As a bonus for fans of Pi and the night sky, on that date the Moon also passed directly through Earth’s umbral shadow in a total lunar eclipse. In clear skies, the colors of an eclipsed Moon can be vivid. Reflecting the deeply reddened sunlight scattered into Earth’s shadow, the darkened lunar disk was recorded in this time series composite image from Cerro Tololo Observatory, Chile. The lunar triptych captures the start, middle, and end of the total eclipse phase that lasted about an hour. A faint bluish tint seen just along the brighter lunar limb at the shadow’s edge is due to sunlight filtered through Earth’s stratospheric ozone layer.
Growing Gallery: Total Lunar Eclipse of 2025 March
Tomorrow’s picture: Venusian silhouette
托洛洛山上空的全食月
影像提供与版权: Petr Horálek/CTIO (Cerro Tololo Observatory) /AURA/NSF/ NOIRLab
说明: 在今年3月14日这天，月亮恰逢满相。而这也正是庆祝圆周率日（Pi Day）的大好时日，因为在这天晚上的天空中，月球的黄道经度与太阳相距3.14弧度（180度）。对圆周率和夜空的爱好者来说，这天的额外惊喜为：月亮恰好也穿过地球的本影，带来月全食的景观。在清朗的夜空中，食月的色泽有时可以很鲜艳。以这幅摄于智利托洛洛山的时序影像为例，受到散射到地球影子里的红化阳光之渲染，月盘带着古铜的色泽。这幅月食三联影像，记录了此例全长约1小时的月全食之食既、食甚及生光等阶段。这轮全食月较亮临边的淡淡泛蓝色泽，则来自受到地球平流层之臭氧层过滤的阳光。
不断增长的画廊: 2025年3月的月全食
明日的图片: Venusian silhouette
