保护地球，探索宇宙，发现文明
在这张NASA卡西尼号探测器拍摄的图像中，阳光照射到土卫六北极附近的液态甲烷湖泊上，并反射了回来。 图片来源：NASA /加州理工学院-喷气推进实验室/亚利桑那州立大学/爱达荷大学（University of Idaho） 利用美国航空航天局（NASA）卡西尼号土星探测任务的数据，天文学家首次绘制了土卫六（Titan，又称“泰坦”）的全球地质图，揭示了土星这颗最大卫星的地形多样性，包含了沙丘、湖泊、山脉、平原、陨石坑以及其他多种地形地貌。 除了地球之外，土卫六是我们太阳系中唯一已知的表面存在稳定液体的行星体（planetary body，太阳系中所有地质情况与行星相同或相似的二级星体，包括行星、矮行星或质量与行星相当的卫星）。与地球上形成湖泊和海洋的情况不同，土卫六上降下的不是来自云层的液态雨水，而是液态的甲烷...
2019 November 25 NGC 6995: The Bat Nebula Image Credit & Copyright: Josep Drudis Explanation: Do you see the bat? It haunts this cosmic close-up of the eastern Veil Nebula. The Veil Nebula itself is a large supernova remnant, the expanding debris cloud from the death explosion of a massive star. While the Veil is roughly circular in shape and covers near...
版权：NASA 修复粒子探测器的太空行走；向月球运输有效载荷的更多潜在合作伙伴；木星卫星的重要发现……最近新闻速递，尽在「本周NASA」！ 11月22日，美国航空航天局（NASA）的安德鲁•摩根（Andrew Morgan）和欧洲空间局（ESA）的卢卡•帕尔米塔诺（Luca Parmitano）出到国际空间站（International Space Station）之外，进行了他们的第二次太空行走，在长达数周的时间里维修名为阿尔法磁谱仪（Alpha Magnetic Spectrometer，AMS）的宇宙粒子探测器。此次太空行走的要点是进行各种旁路修复，具体做法是找到、切断并标记将当前冷却系统连接到AMS的不锈钢管，以便将新系统连接到AMS的侧面。这一系列极其复杂的太空行走，要求地球上的工程师和宇航员设计、开...
2019 November 24 Apollo 12: Self-Portrait Image Credit: NASA, Apollo 12, Charles Conrad Explanation: Is this image art? 50 years ago, Apollo 12 astronaut-photographer Charles “Pete” Conrad recorded this masterpiece while documenting colleague Alan Bean’s lunar soil collection activities on Oceanus Procellarum. The featured image is dramatic...
2019 November 23 Apollo 12 and Surveyor 3 Stereo View Image Credit: NASA, Apollo 12, Alan Bean – Stereo Image Copyright: Kevin Frank Explanation: Put on your red/blue glasses and gaze across the western Ocean of Storms on the surface of the Moon. The 3D view features Apollo 12 astronaut Pete Conrad visiting the Surveyor 3 spacecraft 50 years ago in Nov...
漫游车BRUIE（意为“冰下探索浮力漫游车”）正在南极冰盖下进行测试，以寻找冰层下的生命。BRUIE由美国航空航天局-喷气推进实验室（NASA-JPL）的工程师研发，该自动潜水器在未来某一天或许能够在木卫二（Europa）和土卫二（Enceladus）等卫星上探索覆盖于冰层下的海洋。这幅图描绘了BRUIE于2015年在阿拉斯加州巴罗附近的北极湖泊中的情形。 版权： NASA/JPL-Caltech 2019年11月，一个小型自动潜水器将在南极洲“表演体操动作” – 在海冰下倒立行驶。 来自加利福尼亚州帕萨迪纳的NASA喷气推进实验室的工程师们正在对冰下探索浮力漫游车（Buoyant Rover for Under-Ice Exploration，BRUIE）进行研发，用于在外星球上的冰冷水域进行水下...
For this image, the NASA/ESA Hubble Space Telescope turned its powerful eye toward an emission-line galaxy called NGC 3749. When astronomers explore the contents and constituent parts of a galaxy somewhere in the universe, they use various techniques and tools. One of these is to spread out the incoming light from that galaxy into a spectrum and explore its ...
Days before his 13th birthday, Edward Gonzales lost his father. In spite of childhood hardships, the strong work ethic that his father instilled drove him to obtain employment at one of the largest law firms on the West Coast – O’Melveny and Myers LLP. While at O’Melveny, he managed the Mail Services Department and supported events for former Secretary of St...
2019 November 22 Orion Rising Image Credit & Copyright: Vitalij Kopa Explanation: Looking toward the east in the early hours of a September morning this single exposure made with tripod and camera captured a simple visual experience. Rising above the tree-lined slope are familiar stars in planet Earth’s northern night and the constellation Orion th...
Located about 5.8 billion light years from Earth in the Phoenix Constellation, astronomers have confirmed the first example of a galaxy cluster where large numbers of stars are being born at its core. Galaxy clusters are the largest structures in the cosmos that are held together by gravity, consisting of hundreds or thousands of galaxies embedded in hot gas...