保护地球，探索宇宙，发现文明
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 captured in dramatic fashion in the featured image not only direc...
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 the scene, bright stars of the Winter Hexagon along the Milky...
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：詹姆斯•约书亚•奥托（James Joshua Otto）-《消融的冰川》（Glacial Shifts）/环球制作音乐（...
Newborn stars, hidden behind thick dust, are revealed in this image of a section of the so-called Christmas Tree Cluster from NASA’s Spitzer Space Telescope. The newly revealed infant stars appear as pink and red specks toward the center and appear to have formed in regularly spaced intervals along linear structures in a configuration that resembles th...
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 solar eclipse, the Moon is too far from the Earth to block out ...
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-composite panorama of 66 vertical frames taken consecutively wit...
2019 December 23 Places for OSIRIS-REx to Touch Asteroid Bennu Video Credit: NASA, GSFC, U. Arizona, SVS, OSIRIS-REx Explanation: Where is the best place to collect a surface sample from asteroid Bennu? Launched in 2016, NASA sent the robotic Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx) to investigate th...
2019 December 22 Solstice Illuminated: A Year of Sky Video Credit & Copyright: Ken Murphy (MurphLab); Music: Ariel (Moby) Explanation: Can you find which day is the winter solstice? Each panel shows one day. With 360 movie panels, the sky over (almost) an entire year is shown in time lapse format as recorded by a video camera on the roof of the Explorato...
This image from the NASA/ESA Hubble Space Telescope shows IC 2051, a galaxy in the southern constellation of Mensa (the Table Mountain) lying about 85 million light-years away. It is a spiral galaxy, as evidenced by its characteristic whirling, pinwheeling arms, and it has a bar of stars slicing through its center. This galaxy was observed for a Hubble study...
2019 December 21 Solstice to Solstice Solargraph Timelapse Image Credit & Copyright: Sam Cornwell Explanation: The 2019 December Solstice, on the first day of winter in planet Earth’s northern hemisphere and summer in the south, is at 4:19 Universal Time December 22. That’s December 21 for North America, though. Celebrate with a timelapse ani...