保护地球，探索宇宙，发现文明
2021年04月06日 Mars and the Pleiades Beyond Vinegar Hill Image Credit & Copyright: Kristine Richer Explanation: Is this just a lonely tree on an empty hill? To start, perhaps, but look beyond. There, a busy universe may wait to be discovered. First, physically, to the left of the tree, is the planet Mars. The red planet, which is the new home to NASA’...
2021年4月4日，第44个火星日，或者说是任务的执行日，从毅力号火星车的后置危险相机来看，可以看到NASA的 机智号直升机在火星上。 影像来源：NASA / JPL-Caltech NASA的毅力号火星车登陆火星后，能在火星寒冷的温度中生存是这架小型旋翼飞行器的一个重要里程碑。 机智号火星直升机已经在火星表面度过了它的第一个夜晚。 杰泽罗陨石坑的夜晚温度可以骤降到零下130华氏度(零下90摄氏度)，这可能会冻裂没有保护的电气部件，并损坏飞行所需的机载电池。在4月3日从NASA的毅力号火星车的腹部部署后的第一个夜晚幸存下来，是这个4磅（1.8公斤）重的旋翼飞行器的一个重要里程碑。在未来的日子里，机智号将成为第一架尝试在另一个星球上进行动力控制飞行的飞机。 “这是机智号第一次依靠自己的力量在火星表面活...
A field of sand dunes occupies this frosty 5-kilometer diameter crater in the high-latitudes of the northern plains of Mars. Some dunes have separated from the main field and appear to be climbing up the crater slope along a gully-like form. The surface of the main dune field is characterized by a series of dark-toned polygonal patterns. These may be the res...
为首次火星飞行做准备… 和猎户座一起飞溅… 国际空间站的下一批宇航员正在为发射做准备… 最新新闻速递，尽在「本周NASA」！ 来源：NASA 翻译：灼眼的粉丝 机智号火星直升机准备首次飞行 3月23日在加利福尼亚州帕萨迪纳市的喷气推进实验室举行的发布会上机智号火星直升机成为了焦点。机智号团队计划在4月8日前进行这项技术演示，首次尝试在另一个星球上进行动力控制飞行。 “我们在地球上用无人机和直升机做各种事情，它们比陆基车辆更适合，对吧？因此你可以想象在火星上有同样的能力，在火星上飞行。这可能是为了侦察目的、拍摄照片来侦察区域、未来火星车甚至是未来宇航员的潜在科学目标。”——机智号首席飞行员：哈弗·格里普。 一旦机智号从毅力号上部署，它将在火星上停留30天（相当于地球上一个月的时间），进行试飞活动。 水冲击测试从猎...
2021年03月25日 Curiosity: Sol 3048 Image Credit: NASA/JPL-Caltech – Processing: Elisabetta Bonora & Marco Faccin / aliveuniverse.today Explanation: Before Perseverance there was Curiosity. In fact, the Curiosity rover accomplished the first sky crane maneuver touchdown on Mars on April 5, 2012. March 2, 2021 marked Curiosity’s 3,048th martian d...
2021年03月23日 Mars over Duddo Stone Circle Image Credit & Copyright: Ged Kivlehan Explanation: Why are these large stones here? One the more famous stone circles is the Duddo Five Stones of Northumberland, England. Set in the open near the top of a modest incline, a short hike across empty fields will bring you to unusual human -sized stones that are unli...
An illustration of NASA’s Ingenuity Helicopter flying on Mars. Ingenuity, a technology demonstration experiment, will be the first aircraft to attempt powered, controlled flight on another planet. Ingenuity arrived at Mars on Feb. 18, 2021, attached to the belly of NASA’s Mars 2020 Perseverance rover. Ingenuity is expected to attempt its first flight t...
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 ...