Spring doesn’t just hapen on Earth. Spring also happens on some of our neighboring planets in the solar system. Of the countless equinoxes Saturn has seen since the birth of the solar system, this one, captured here in a mosaic of light and dark, is the first witnessed up close by an emissary
2021年01月19日 A Lunar Corona with Jupiter and Saturn Image Credit & Copyright: Alessandra Masi Explanation: Why does a cloudy moon sometimes appear colorful? The effect, called a lunar corona, is created by the quantum mechanical diffraction of light around individual, similarly-sized water dropl
2021年01月09日 Titan: Moon over Saturn Image Credit: NASA, JPL-Caltech, Space Science Institute Explanation: Like Earth’s moon, Saturn’s largest moon Titan is locked in synchronous rotation. This mosaic of images recorded by the Cassini spacecraft in May of 2012 shows its anti-Saturn side,
2020年12月23日 Jupiter Meets Saturn: A Red Spotted Great Conjunction Image Credit & Copyright: Damian Peach Explanation: It was time for their close-up. Two days ago Jupiter and Saturn passed a tenth of a degree from each other in what is known a Great Conjunction. Although the two planets pass ea
2020年12月19日 Conjunction after Sunset Image Credit & Copyright: Alireza Vafa Explanation: How close will Jupiter and Saturn be at their Great Conjunction? Consider this beautiful triple conjunction of Moon, Jupiter and Saturn captured through clouds in the wintry twilight. The telephoto view loo
2020年12月13日星期日，在弗吉尼亚州卢雷，雪兰多国家公园日落后拍摄的土星(上方)和木星(下方)。两颗行星在12月21日朝着大近合前进时，彼此之间的距离越来越近，这两个巨行星之间的距离将相差十分之一度。 来源：NASA / Bill Ingalls 天文爱好者迎来了年终盛宴。俗称“圣诞节之星”的是一颗特别活跃的行星结，在接下来的两周里，当明亮的木星和土星近合在12月21日晚上达到顶峰时，很容易在傍晚的天空中看到它们。 1610年，意大利天文学家伽利略·伽利莱（Galileo Galilei）将望远镜对准夜空，发现了木星的四个卫星——木卫一、木卫二、木卫三和木卫四。同一年，伽利略还在土星周围
2020年12月15日 Great Conjunction: Saturn and Jupiter Converge Illustration Credit & Copyright: Sebastian Voltmer Explanation: It’s happening. Saturn and Jupiter are moving closer and will soon appear in almost exactly the same direction. Coincidentally, on the night of the December solstice &
2020年12月12日 Saturn and Jupiter in Summer 2020 Image Credit & Copyright: Tunc Tezel (TWAN), Onur Durma Explanation: During this northern summer Saturn and Jupiter were both near opposition, opposite the Sun in planet Earth’s sky. Their paired retrograde motion, seen about every 20 years, i
2020年12月08日 Great Conjunction over Sicilian Lighthouse Image Credit & Copyright: Kevin Saragozza Explanation: Don’t miss the coming great conjunction. In just under two weeks, the two largest planets in our Solar System will angularly pass so close together in Earth’s sky that the Moon wo
