2019 December 29 Cassini Spacecraft Crosses Saturn’s Ring Plane Image Credit: NASA, ESA, JPL, ISS, Cassini Imaging Team; Processing: Fernando Garcia Navarro Explanation: If this is Saturn, where are the rings? When Saturn’s “appendages” disappeared in 1612, Galileo did not un […]
NASA astronaut Christina Koch makes observations from the International space Station’s cupola. Koch has already made history once in her stay aboard the orbital laboratory. In October 2019 she was part of the first all-female spacewalk and now she is poised to make history again. On Dec. 28,
2019 December 28 A Distorted Sunrise Eclipse Image Credit & Copyright: Elias Chasiotis Explanation: Yes, but have you ever seen a sunrise like this? Here, after initial cloudiness, the Sun appeared to rise in two pieces and during partial eclipse, causing the photographer to describe it as the m
12月27日20时45分，长征五号遥三运载火箭在中国文昌航天发射场点火升空，2000多秒后将实践二十号卫星送入预定轨道，发射飞行试验取得圆满成功。此次发射飞行试验主要考核长征五号火箭总体方案、各分系统方案的正确性、协调性，对后续航天任务的相关关键技术进行验证。
The Anti-Atlas Mountains of Morocco formed as a result of the collision of the African and Eurasian tectonic plates about 80 million years ago. This collision destroyed the Tethys Ocean. The limestone, sandstone, claystone and gypsum layers that formed the ocean bed were folded and crumpled to creat
2019 December 27 A Partial Solar Eclipse Sequence Reflected Image Credit & Copyright: Majid Ghohroodi Explanation: What’s happened to the Sun? Yesterday, if you were in the right place at the right time, you could see the Sun rise partially eclipsed by the Moon. The unusual sight was captu
2019 December 26 The Northern Winter Hexagon Image Credit & Copyright: Petr Horálek Explanation: December’s New Moon brought a solar eclipse to some for the holiday season. It also gave beautiful dark night skies to skygazers around the globe, like this moonless northern winter night. In t
在过去的2年中，美国航空航天局（NASA）火星大气与挥发物演化任务（Mars Atmosphere and Volatile Evolution，MAVEN）收集了大量的火星大气数据，利用这些数据，研究人员绘制出了第一幅地球以外的行星高层大气风循环图，这幅新的火星风场图能够帮助科学家更好地了解火星气候的运行机制，从而更好地探究这颗红色星球的古老历史，以及目前正在经历的演变。 通过测量火星高层大气中的风速和风向，MAVEN探测器已获得了重要的发现：高空处的风流正受到遥远下方地形特征的干扰。 视频来源：NASA /戈达德航天飞行中心/ MAVEN /科罗拉多大学波尔得分校/密歇根大学 背景音乐：詹
2019 December 25 An Annular Solar Eclipse over New Mexico Image Credit & Copyright: Colleen Pinski Explanation: What is this person doing? In 2012 an annular eclipse of the Sun was visible over a narrow path that crossed the northern Pacific Ocean and several western US states. In an annular sol
2019 December 24 A Northern Winter Sky Panorama Image Credit & Copyright: Tomas Slovinsky Explanation: What stars shine in Earth’s northern hemisphere during winter? The featured image highlights a number of bright stars visible earlier this month. The image is a 360-degree horizontal-comp
