保护地球，探索宇宙，发现文明
2022年11月30日 The Light, the Dark, and the Dusty Image Credit & Copyright: Anthony Quintile Explanation: This colorful skyscape spans about four full moons across nebula rich starfields along the plane of our Milky Way Galaxy in the royal northern constellation Cepheus. Near the edge of the region’s massive molecular cloud some 2,400 light-years awa...
一种新的声波技术将来自黑洞的X射线“光之回响”转化为声音。NASA的钱德拉和雨燕天文台观测到的X射线环显示了回响。黑洞周围的物质会产生X射线爆发。X射线被气体云和尘埃反射，就像雾中车灯发出的光束一样。
2022年11月28日，周一，NASA的猎户座宇宙飞船在执行阿尔忒弥斯1号任务时达到了它与地球的最大距离——距离我们的母星268,563英里，比以往任何旨在将人类送往太空和返回的宇宙飞船都要远。在这张照片中，猎户座号捕捉到了地球和月球的独特视角，这是由安装在飞船太阳能电池阵列上的相机拍摄。
2022年11月29日 The Gum Nebula Supernova Remnant Image Credit & Copyright: Victor Lima Explanation: Because the Gum Nebula is the closest supernova remnant, it is actually hard to see. Spanning 40 degrees across the sky, the nebula appears so large and faint that it is easily lost in the din of a bright and complex background. The Gum Nebula is highlighted ...
A portion of the far side of the Moon looms large just beyond the Orion spacecraft in this image taken Monday, Nov. 21, the sixth day of the Artemis I mission, by a camera on the tip of one of Orion’s solar arrays. The darkest spot visible near the middle of the image is Mare Orientale. Image Credit: NASA See more images from Orion’s flight in our Flic...
2022年11月28日 Leonid Meteors Through Orion Image Credit & Copyright: Luo Hongyang Explanation: Where will the next meteor appear? Even during a meteor shower, it is practically impossible to know. Therefore, a good way to enjoy a meteor shower is to find a place where you can sit comfortably and monitor a great expanse of dark sky. And it may be satisfyin...
天空中一些最亮的物体被称为耀变体。它们由一个超大质量黑洞组成，以吸积盘中围绕它旋转的物质为食，这可以在每一侧产生两股垂直于吸积盘的强大喷流。耀变体特别明亮，因为其强大的高速粒子射流直接指向地球。几十年来，科学家们一直在想：这些喷流中的粒子是如何被加速到如此高的能量？ NASA的X射线成像偏振探测器（IXPE）帮助天文学家接近答案。在《自然》杂志上发表的一项由一个大型国际合作组织撰写的新研究中，天文学家发现，对粒子加速的最佳解释是喷流中的激波。 “这是一个有40年历史的谜团，我们已经解开了。”这项研究的主要作者、芬兰ESO天文中心FINCA的天文学家扬尼斯·利奥达基斯说。“我们终于找到了拼图的所有部分，他们绘制的图像也很清晰。” 这幅图显示了NASA的IXPE航天器（在右边）正在观测耀变体Markarian 50...
2022年11月27日 Supernumerary Rainbows over New Jersey Image Credit & Copyright: John Entwistle Explanation: Yes, but can your rainbow do this? After the remnants of Hurricane Florence passed over the Jersey Shore, New Jersey, USA in 2018, the Sun came out in one direction but something quite unusual appeared in the opposite direction: a hall of rainbows. O...
2022年11月26日 Saturn at Night NASA, JPL-Caltech, Space Science Institute, Mindaugas Macijauskas Explanation: Saturn is still bright in planet Earth’s night skies. Telescopic views of the distant gas giant and its beautiful rings often make it a star at star parties. But this stunning view of Saturn’s rings and night side just isn’t possible f...
The Astronaut Snoopy balloon is seen floating along in the Macy’s Thanksgiving Day Parade on Thursday, Nov. 24, 2022, in New York City. The Astronaut Snoopy balloon is flying in New York City at the same time that Snoopy also flies around the Moon in the Orion spacecraft as a zero gravity indicator for the Artemis I mission. Credit: NASA/Bill Ingalls 2...