保护地球，探索宇宙，发现文明
4月份的天空会发生什么？ 早晨的行星，日落的拱门，还有在狮子座中找到狮子。 来源：NASA/JPL-Caltech 翻译：灼眼的粉丝 4月6日的早晨天空发现木星和土星与新月形成了一个可爱的三重奏。在日出前一小时的东南方低空寻找它们。 来源：NASA/JPL-Caltech 4月22日是地球日，也是一年一度的机会让我们共同欣赏我们地球家园的神奇和美丽。因此，当天空晴朗时，可以在一年中的任何时候都可以看到与地球相关的景象。 这是一种黄昏现象，你可能在日落之后才注意到。如果您可以将视线从西方的日落中移开，然后转身面向东方，你会经常看到一条粉色或橙色的天空带，下面有一条深蓝色天空带。这些天空带在日落后的几分钟内向上移动，形成一个横跨天空的拱形，随着夜幕的降临慢慢消失。 暗带是地球上升的阴影。在它上面，玫瑰色的天空带被称...
2020年11月11日 Colors of the Moon Image Credit & Copyright: Marcella Giulia Pace Explanation: What color is the Moon? It depends on the night. Outside of the Earth’s atmosphere, the dark Moon, which shines by reflected sunlight, appears a magnificently brown-tinged gray. Viewed from inside the Earth’s atmosphere, though, the moon can appear quit...
2020年9月22日 Equinox in the Sky Image Credit & Copyright: Luca Vanzella Explanation: Does the Sun set in the same direction every day? No, the direction of sunset depends on the time of the year. Although the Sun always sets approximately toward the west, on an equinox like today the Sun sets directly toward the west. After today’s September equinox...
2020 June 24 Inverted City Beneath Clouds Image Credit & Copyright: Mark Hersch Explanation: How could that city be upside-down? The city, Chicago, was actually perfectly right-side up. The long shadows it projected onto nearby Lake Michigan near sunset, however, when seen in reflection, made the buildings appear inverted. This fascinating, puzzling, ye...
2020 February 4 A Sunset Night Sky over the Grand Canyon Image Credit & Copyright: Robert Q. Fugate Explanation: Seeing mountain peaks glow red from inside the Grand Canyon was one of the most incredible sunset experiences of this amateur photographer’s life. They appeared even more incredible later, when digitally combined with an exposure of the ...