保护地球，探索宇宙，发现文明
2021年03月14日 A Flag Shaped Aurora over Sweden Image Credit & Copyright: Mia Stålnacke Explanation: It appeared, momentarily, like a 50-km tall banded flag. In mid-March of 2015, an energetic Coronal Mass Ejection directed toward a clear magnetic channel to Earth led to one of the more intense geomagnetic storms of recent years. A visual result was wide s...
2021年03月13日 SuperCam Target on Ma’az Image Credit: NASA/JPL-Caltech/LANL/CNES/CNRS Explanation: What’s the sound of one laser zapping? There’s no need to consult a Zen master to find out, just listen to the first acoustic recording of laser shots on Mars. On Perseverance mission sol 12 (March 2) the SuperCam instrument atop the rover’...
2021年03月12日 Messier 81 Image Credit & Copyright: Wissam Ayoub Explanation: One of the brightest galaxies in planet Earth’s sky is similar in size to our Milky Way Galaxy: big, beautiful Messier 81. Also known as NGC 3031 or Bode’s galaxy for its 18th century discoverer, this grand spiral can be found toward the northern constellation of Ursa...
2021年03月11日 Zodiacal Light and Mars Image Credit & Copyright: Joshua Rhoades Explanation: Just after sunset on March 7, a faint band of light still reaches above the western horizon in this serene, rural Illinois, night skyscape. Taken from an old farmstead, the luminous glow is zodiacal light, prominent in the west after sunset during planet Earth̵...
2021年03月10日 NGC 1499: The California Nebula Image Credit & Copyright: Yannick Akar Explanation: Could Queen Calafia’s mythical island exist in space? Perhaps not, but by chance the outline of this molecular space cloud echoes the outline of the state of California, USA. Our Sun has its home within the Milky Way’s Orion Arm, only about 1,000 ...
2021年03月09日 Perseverance 360: Unusual Rocks and the Search for Life on Mars Image Credit: NASA, JPL-Caltech, ASU, MSSS Explanation: Is that a fossil? Looking through recent images of Mars taken by the new Perseverance rover may seem a bit like treasure hunting, with the possibility of fame coming to the first person to correctly identify a petrified bone, a ...
2021年03月08日 Three Tails of Comet NEOWISE Image Credit & Copyright: Nicolas Lefaudeux Explanation: What created the unusual red tail in Comet NEOWISE? Sodium. A spectacular sight back in the summer of 2020, Comet NEOWISE, at times, displayed something more than just a surprisingly striated white dust tail and a pleasingly patchy blue ion tail. Some color...
2021年03月07日 Pillars of the Eagle Nebula in Infrared Image Credit: NASA, ESA, Hubble, HLA; Processing: Luis Romero Explanation: Newborn stars are forming in the Eagle Nebula. Gravitationally contracting in pillars of dense gas and dust, the intense radiation of these newly-formed bright stars is causing surrounding material to boil away. This image, taken wit...
来源：NASA 翻译：灼眼的粉丝 总统祝贺火星毅力号火星车团队… 毅力号首次在红色星球上行驶… 还有在空间站外的两次太空行走… 最新新闻速递，尽在「本周NASA」！ 拜登总统祝贺火星2020团队 3月4日，美国总统乔·拜登给喷气推进实验室中心主任迈克·沃特金斯和整个火星2020团队打了电话，祝贺我们的毅力号火星车于2月18日成功登陆火星。 “你们做到了。你们给人一种“美国回来了”的感觉。你的所作所为令人震惊。你们相信科学，你们相信辛勤工作，你们相信只要你们同心协力就没有什么事情是做不到的。” 毅力号还于3月4日进行了第一次试车，这是一次长途跋涉，穿越了大约21.3英尺的火星地表，同时也进行了机动性测试。一旦火星车开始追求它的科学目标，预计它将完成665英尺或更高的驱动里程。与此同时，任务小组的科学家们将火星车的...
2021年03月06日 Perseverance Takes a Spin Image Credit: NASA, JPL-Caltech, Mars 2020 Explanation: After arriving at Jezero Crater on Mars, Perseverance went for a spin on March 4. This sharp image from the car-sized rover’s Navcam shows tracks left by its six wheels in the martian soil. In preparation for operations on the surface of the Red Planet, its fi...