保护地球，探索宇宙，发现文明
2023年11月19日 Space Station, Solar Prominences, Sun Image Credit & Copyright: Mehmet Ergün Explanation: That’s no sunspot. It’s the International Space Station (ISS) caught passing in front of the Sun. Sunspots, individually, have a dark central umbra, a lighter surrounding penumbra, and no Dragon capsules attached. By contrast, the ISS is a ...
2023年10月29日 A Partial Lunar Eclipse Image Credit & Copyright: Orazio Mezzio Explanation: What’s happened to the Moon? Within the last day, part of the Moon moved through the Earth’s shadow. This happens about once or twice a year, but not every month since the Moon’s orbit around the Earth is slightly tilted. Pictured here, the face of...
2023年10月25日 Gone in 60 Seconds: A Green Flash Sunset Video Credit & Copyright: Tengyu Cai Explanation: In 60 seconds, this setting Sun will turn green. Actually, the top of the Sun already appears not only green, but wavey — along with all of its edges. The Sun itself is unchanged — both effects are caused by looking along hot and cold layer...
2023年10月14日 Circular Sun Halo Image Credit & Copyright: Vincenzo Mirabella Explanation: Want to see a ring around the Sun? It’s easy to do in daytime skies around the world. Created by randomly oriented ice crystals in thin high cirrus clouds, circular 22 degree halos are visible much more often than rainbows. This one was captured by smart phone ...
八月的天空会发射什么？在黄昏和黎明看到土星，英仙座流星的回归，还有一颗“超级蓝月”。
2023年8月1日 Monster Solar Prominence Image Credit & Copyright: Mike Wenz Explanation: The monsters that live on the Sun are not like us. They are larger than the Earth and made of gas hotter than in any teapot. They have no eyes, but at times, many tentacles. They float. Usually, they slowly change shape and just fade back onto the Sun over about a month....
2023年7月11日 Sunspots on an Active Sun Image Credit: NASA, SDO; Processing & Copyright: Şenol Şanlı Explanation: Why is our Sun so active now? No one is sure. An increase in surface activity was expected because our Sun is approaching solar maximum in 2025. However, last month our Sun sprouted more sunspots than in any month during the entire previous 11-...
七月的天空会发生什么？火星和金星分道扬镳，土星与一颗充满尘埃的年轻恒星一起巡游，这是观测银河系的黄金时段。
2023年6月11日 The Sun and Its Missing Colors Image Credit: Nigel Sharp (NSF), FTS, NSO, KPNO, AURA, NSF Explanation: Here are all the visible colors of the Sun, produced by passing the Sun’s light through a prism-like device. The spectrum was created at the McMath-Pierce Solar Observatory and shows, first off, that although our white-appearing Sun emits l...
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...