equinox

天文·每日一图

土星的春分

The planet Saturn is pictured 6 times in a horizonal column, labelled by years with 2020 at the top and 2025 at the bottom. As the years progress, Saturn’s ring appear less prominent. Please see the explanation for more detailed information.
这张图以水平列方式展示了土星在六个不同年份的影像,从上到下依次标注为2020年至2025年。随着年份推移,土星的光环逐渐变得不那么显眼。有关更多详细信息,请参阅说明。

天文·每日一图

春分日落

A city skyline is shown behind some hills and a river. The path of the Sun is shown for several times during a year. Please see the explanation for more detailed information.
一座城市的天际线矗立在群山与河流之后。图中展示了太阳在一年中多个时刻的运行轨迹。有关更多详细信息,请参阅说明。

天文·每日一图

春秋分的美丽日落

太阳在遥远的地平线上落下,在开阔的田野上一条长长的道路的尽头。日落是橙色的,就像周围的天空一样。电线杆排列在路的右侧。有关更多详细信息,请参阅说明。

天文·每日一图

托斯卡尼上空的获月

2023年9月30日 A Harvest Moon over Tuscany Image Credit & Copyright: Antonio Tartarini Explanation: For northern hemisphere dwellers, September’s Full Moon was the Harvest Moon. Reflecting warm hues at sunset, it rises behind cypress trees huddled on a hill top in Tuscany, Italy in this telep

天文·每日一图

南半球下午的日行迹

2023年9月23日 Afternoon Analemma Image Credit & Copyright: Ian Griffin (Otago Museum) Explanation: An analemma is that figure-8 curve you get when you mark the position of the Sun at the same time each day for one year. To make this one, a 4×5 pinhole camera was set up looking north in southe

天文·每日一图

三条日轨

2023年6月21日 Three Sun Paths Image Credit & Copyright: Marcella Giulia Pace & Giuseppe De Donà Explanation: Does the Sun follow the same path every day? No. The Sun’s path changes during the year, tracing a longer route during the summer than the winter. Pictured here, the Sun’s

天文·每日一图

春分的羽蛇神金字塔

2023年3月19日 Equinox at the Pyramid of the Feathered Serpent Image Credit & Copyright: Robert Fedez Explanation: To see the feathered serpent descend the Mayan pyramid requires exquisite timing. You must visit El Castillo — in Mexico’s Yucatán Peninsula — near an equinox. Then,

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