标签: Saturn

土星的北极六角云

2023年6月18日 Saturn’s Northern Hexagon Image Credit & Copyright: NASA, ESA, JPL, SSI, Cassini Imaging Team Explanation: Why would clouds form a hexagon on Saturn? Nobody is sure. Originally discovered during the Voyager flybys of Saturn in the 1980s, nobody has ever seen anything like it anywhere else in the Solar System. Acquiring its first sunlit ...

观星指南(2023年6月)

6月份的天空会发生什么? 影像来源:NASA/JPL-Caltech 翻译:灼眼的粉丝 火星和金星,夏天的星星,还有夏至! 随着北半球夏季明亮的行星升起,战争和爱情的行星每晚都越来越近。请注意21号的夏至。 月度亮点 6月1日至2日——火星位于蜂巢星团(M44)。天黑后在西方寻找这颗红色的行星,双筒望远镜或小型望远镜会在这个开放的星团中发现一个闪闪发光的恒星背景。 6月3日——满月 6月18日——新月 6月21日——今晚新月与金星和火星组成一个可爱的组合。日落后在西方找到它们。 6月21日——夏至。对北方来说,这是一年中白昼时间最长的一天,因为太阳在天空中的轨迹最高、最长。南半球的情况正好相反,在寒冷的冬季,南半球一年中白昼时间最短的一天。 整月——日落之后,火星和金星在西方天空的每个夜晚都越来越近。每晚这对双...

观星指南(2023年5月)

5月份的天空会发生什么?月球与行星的合影,我们到达了“金星的顶峰”,以及南半球的天空有什么不同呢?

土卫十二的彩色影像

2023年4月30日 Saturn’s Moon Helene in Color Image Credit: NASA, JPL-Caltech, SSI; Processing: Daniel Macháček Explanation: Although its colors may be subtle, Saturn’s moon Helene is an enigma in any light. The moon was imaged in unprecedented detail in 2012 as the robotic Cassini spacecraft orbiting Saturn swooped to within a single Earth diameter o...

银河巨人土卫六和土星

Titan, Saturn’s largest moon, looks quite small in comparison to the giant planet behind it in this natural color view from the Cassini-Huygens spacecraft. This image from Aug. 29, 2012, also shows seasonal changes occurring on Saturn; as spring comes to the northern Saturnian hemisphere, the azure blue seen fades, while winter in the south adds a bluish hue...

土卫七: 有古老陨石坑的卫星

2023年3月12日 Saturn’s Hyperion: A Moon with Odd Craters Image Credit: NASA, ESA, JPL, SSI, Cassini Imaging Team Explanation: What lies at the bottom of Hyperion’s strange craters? To help find out, the robot Cassini spacecraft that once orbited Saturn swooped past the sponge-textured moon and took images of unprecedented detail. A six-image mosaic ...