2020年12月31日 Trail of the Returner Image Credit & Copyright: Zhuoxiao Wang Explanation: Familiar stars of a northern winter’s night shine in this night skyview, taken near Zhangye, Gansu, China and the border with Inner Mongolia. During the early hours of December 17 Orion is near center i […]
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11日 Messier Craters in Stereo Image Credit: Apollo 11, NASA; Stereo Image Copyright Patrick Vantuyne Explanation: Many bright nebulae and star clusters in planet Earth’s sky are associated with the name of astronomer Charles Messier from his famous 18th century catalog. His name is als
2020年12月05日 Mons Rumker in the Ocean of Storms Image Credit & Copyright: Jean-Yves Letellier Explanation: Mons Rumker, a 70 kilometer wide complex of volcanic domes, rises some 1100 meters above the vast, smooth lunar mare known as Oceanus Procellarum, the Ocean of Storms. Daylight came to the
2020年12月02日 Eye of Moon Image Credit & Copyright: Zachery Cooley Explanation: Who’s watching who? The featured image of the Moon through a gap in a wall of rock may appear like a giant eye looking back at you. Although, in late October, it took only a single exposure to capture this visua
上图为木星的卫星木卫二的艺术概念图，显示了在木卫二背向太阳的“夜侧面”，它冰冷的表面也会发光。辉光的变化和辉光本身的颜色可以揭示木卫二表面冰成分的相关信息。 图片来源：NASA / 加州理工-喷气推进实验室 新的实验在实验室中再现了木卫二（Europa）的环境，发现即使在背向太阳的“夜侧面”（nightside），这颗冰冷的卫星也闪耀着光辉，这一景象带给我们的，将远不只是炫酷的视觉效果。 天寒地冻、海洋遍布的木卫二默默地围绕木星运行，承受着辐射没完没了的无情冲击。木星用电子和其他粒子没日没夜地轰击木卫二表面，让它身处高能辐射的炼狱。然而，在这些粒子对木卫二拳打脚踢的同时，它们可能也导致了一些超
2020年11月14日 Venus, Mercury, and the Waning Moon Image Credit & Copyright: Kevin Sargozza Explanation: Yesterday, early morning risers around planet Earth were treated to a waning Moon low in the east as the sky grew bright before dawn. From the Island of Ortigia, Syracuse, Sicily, Italy this si
