保护地球，探索宇宙，发现文明
2021年04月07日 Threads of NGC 1947 Image Credit: ESA/Hubble & NASA, D. Rosario; Acknowledgment: L. Shatz Explanation: Found in far southern skies, deep within the boundaries of the constellation Dorado, NGC 1947 is some 40 million light-years away. In silhouette against starlight, obscuring lanes of cosmic dust thread across the peculiar galaxy’s bri...
天气常常会影响我们的日常计划。天气预报说有凉风时，你可以穿上一件薄夹克；或者暴风雨即将来临，你可以推迟旅行计划。NASA的工程师也会使用天气数据来制定计划，这也是为什么他们要分析数百万英里以外的火星上的情况。 2月19日，大约在火星探测器登陆火星一天后，NASA毅力号火星车上的火星环境动态分析仪(MEDA)系统首次通电30分钟。太平洋标准时间当天晚上8点25分左右，工程师们收到了来自MEDA的初始数据。 火星环境动态分析仪(MEDA)系统发射前的照片，该系统目前正在为来自火星杰泽罗陨石坑的工程师提供大气测量。 影像来源：NASA/JPL-Caltech “在紧张的下降和着陆阶段之后，MEDA团队焦急地等待第一个数据，以确认我们的仪器安全着陆，”马德里国家航空航天技术研究所(Instituto national ...
The Soyuz rocket is rolled out by train to the launch pad at Site 31, Tuesday, April 6, 2021, at the Baikonur Cosmodrome in Kazakhstan. Expedition 65 NASA astronaut Mark Vande Hei, Roscosmos cosmonauts Pyotr Dubrov and Oleg Novitskiy are scheduled to launch aboard their Soyuz MS-18 spacecraft on April 9. Image Credit: NASA/Bill Ingalls 2021年4月6日，星期二，在哈萨克斯坦拜科...
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...
In this March 28, 2021, image, Northrop Grumman’s Cygnus resupply ship, with its prominent cymbal-shaped UltraFlex solar arrays, is pictured attached to the Unity module of the International Space Station. Earth’s atmospheric glow is seen blanketing the horizon as the orbital complex flew 262 miles above Ethiopia. 在这张2021年3月28日的图片中，诺思罗普-格鲁曼公司的天鹅座...
2021年04月05日 Veil Nebula: Wisps of an Exploded Star Image Credit: ESA/Hubble & NASA, Z. Levay Explanation: Wisps like this are all that remain visible of a Milky Way star. About 7,000 years ago that star exploded in a supernova leaving the Veil Nebula. At the time, the expanding cloud was likely as bright as a crescent Moon, remaining visible for weeks t...
2021年04月04日 In, Through, and Beyond Saturn’s Rings Image Credit: Cassini Imaging Team, ISS, JPL, ESA, NASA Explanation: Four moons are visible on the featured image — can you find them all? First — and farthest in the background — is Titan, the largest moon of Saturn and one of the larger moons in the Solar System. The dark feature ac...
This image taken by the NASA/ESA Hubble Space Telescope revisits the Veil Nebula, which was featured in a previous Hubble image release. In this image, new processing techniques have been applied, bringing out fine details of the nebula’s delicate threads and filaments of ionized gas. To create this colorful image, observations were taken by Hubble’s W...
2021年04月03日 Ingenuity on Sol 39 Image Credit: NASA / JPL-Caltech / MSSS Explanation: The Mars Ingenuity Helicopter, all four landing legs down, was captured here on sol 39 (March 30) slung beneath the belly of the Perseverance rover. The near ground level view is a mosaic of images from the WATSON camera on the rover’s SHERLOC robotic arm. Near the cen...