蟹状星云:对时间的观察

蟹状星云:对时间的观察

ByNASA中文

This 2018 composite of the Crab Nebula was made with data from the Chandra X-Ray Observatory (blue and white), Hubble Space Telescope (purple), and Spitzer Space Telescope (pink). The star that exploded to create the Crab Nebula was first seen from Earth in 1054 A.D. Since its launch in 1999, Chandra has frequently observed the nebula and x-ray observations have helped astronomers better understand this spectacular object. The Crab Nebula was one of the first objects that Chandra examined with its sharp X-ray vision, and it has been a frequent target of the telescope ever since. There are many reasons that the Crab Nebula is such a well-studied object: it is one of a handful of cases where there is strong historical evidence for when…

乔·阿卡巴从教师转到了宇航员

乔·阿卡巴从教师转到了宇航员

ByNASA中文

It’s #TeacherAppreciationWeek and teachers and space travel go hand-in-hand. Teacher-turned-astronaut Joe Acaba taught one year of high school science at Melbourne High School, Florida, and four years of middle school math and science at Dunnellon Middle School, Florida. As an astronaut, Acaba has logged a total of 306 days in space on three flights, first as a mission specialist on the Space Shuttle Discovery STS-119 mission and twice aboard the International Space Station. In this image, Acaba reads to students from aboard the International Space Station during Expedition 53/54 (September 13 – February 28, 2018). Image Credit: NASA #TeacherAppreciationWeek（谢师周）与老师和太空旅行齐头并进。 曾当过教师的宇航员乔·阿卡巴(Joe Acaba)在佛罗里达州墨尔本高中(Melbourne high school)教了一年高中科学，在佛罗里达州邓尼伦中学(Dunnellon middle school)教了四年初中数学和科学。 作为一名宇航员，阿卡巴已经进行了3次太空飞行，总共306天，第一次是作为发现号航天飞机STS-119任务的任务专家，第二次是在国际空间站。 在这张图片中，阿卡巴（Acaba）在第53/54号探险队（2018年9月13日至2月28日）期间向国际空间站上的学生朗读。 图片来源：NASA

Sang Choi入选NASA的发明家名人堂

Sang Choi入选NASA的发明家名人堂

ByNASA中文

Sang Choi has worked for NASA for nearly 40 years. Since beginning work at the Langley Research Center in October 1980, Choi has received 71 awards from the agency. He also received three Nano 50 Awards from the Foresight Instittute for his innovative bionano technology in 2006 and 2007, and was cited as a Nano50 Innovator of the Year in 2008. He won a R&D100 Award in 2009, the 2010 SOLAR Award in 2010, and first prize in the 2017 Create the Future Design Contest in Electronics. Additioanlly, Choi has published more than 200 technical papers and reports. He has patented 43 and has several more patents pending. Choi also is an associate fellow of the American Institute of Aeronautics and Astronautics and a fellow…

照亮暗物质

照亮暗物质

ByNASA中文

Dark matter, although invisible, makes up most of the universe’s mass and creates its underlying structure. Dark matter’s gravity drives normal matter (gas and dust) to collect and build up into stars and galaxies. Although astronomers cannot see dark matter, they can detect its influence by observing how the gravity of massive galaxy clusters, which contain dark matter, bends and distorts the light of more-distant galaxies located behind the cluster. As seen in this image, large galaxy clusters contain both dark and normal matter. The immense gravity of all this material warps the space around the cluster, causing the light from objects located behind the cluster to be distorted and magnified. This phenomenon is called gravitational lensing. This sketch shows paths of light from a…

火星直升机将执行NASA下一个红色星球探测器任务

火星直升机将执行NASA下一个红色星球探测器任务

ByNASA中文

Shown in the artist’s rendering is the Mars Helicopter, a small, autonomous rotorcraft, will travel with NASA’s Mars Perseverance rover, currently scheduled to launch in July 2020, to demonstrate the viability and potential of heavier-than-air vehicles on the Red Planet. Destined to become the first aircraft to attempt powered flight on another planet, NASA’s Mars Helicopter officially has received a new name: Ingenuity. Vaneeza Rupani, a junior at Tuscaloosa County High School in Northport, Alabama, came up with the name and the motivation behind it during NASA’s “Name the Rover” essay contest. Image Credit: NASA/JPL-Caltech 艺术家的渲染图上显示了火星直升机，这是一种小型的自动旋翼飞机，将与NASA的毅力号火星车一起登陆火星。毅力号火星车目前计划于2020年7月发射，以展示火星上比空气重的飞行器的可行性和潜力。 NASA的火星直升机将成为尝试在另一个星球上进行动力飞行的第一架飞机，现在它正式获得了一个新名字：Ingenuity。 阿拉巴马州诺斯波特塔斯卡卢萨县高中的初中生凡妮莎·鲁帕尼（Vaneeza Rupani）在NASA的“为火星车命名”征文比赛中提出了这个名字和动机。 图片来源：NASA/JPL-Caltech

30年前的哈勃太空望远镜

30年前的哈勃太空望远镜

ByNASA中文

On April 25, 1990, the Hubble Space Telescope was deployed from the cargo bay of space shuttle Discovery. Here, Hubble has one of its two solar array panels deployed while still in the grasp of Discovery’s remote manipulator system. Image Credit: NASA 1990年4月25日，哈勃太空望远镜在发现号航天飞机的货舱中展开。哈勃望远镜的两个太阳能电池板之一已经展开，同时仍在探索号的远程遥控系统控制之下。 影像来源：NASA

NASA加入抗击COVID-19

NASA加入抗击COVID-19

ByNASA中文

On April 25, NASA Administrator Jim Bridenstine provided President Donald Trump with an update at the White House on NASA’s response to COVID-19. Bridenstine discussed how the agency’s innovative workforce has mobilized some of its greatest minds to apply NASA research and ingenuity to fighting COVID-19. “The questions is what do you do with rocket scientists when they stay at home? What they do is they build amazing things,” Administrator Bridenstine told President Trump Friday, underlining NASA’s efforts to reduce the spread of COVID-19 by implementing a mandatory telework policy for the majority of the agency’s workforce. Focused on three of the most developed efforts, Bridenstine showcased to the President and the media some of the devices, including the NASA VITAL ventilator created at NASA’s…

空间站工作人员拍摄了一张萨斯奎哈纳河的照片

空间站工作人员拍摄了一张萨斯奎哈纳河的照片

ByNASA中文

The Susquehanna River cuts through the folds of the Valley-and-Ridge province of the Appalachian Mountains in this photograph taken by the crew of the International Space Station. The Valley-and-Ridge province is a section of the larger Appalachian Mountain Belt between the Appalachian Plateau and the Blue Ridge physiographic provinces. The northeast-southwest trending ridges are composed of Early Paleozoic sedimentary rocks. The valleys between them were made of softer rocks (limestone and shales) that were more susceptible to erosion; they are now occupied by farms. The Susquehanna River cuts through several ridges as it flows south. The Susquehanna River flows 444 mi (714 kilometers) from upstate New York to Maryland, draining into Chesapeake Bay. Learn more about this image. Fifty years ago, on April 22, 1970,…

马达加斯加的庞贝托卡湾，看起来像是另一个世界

马达加斯加的庞贝托卡湾，看起来像是另一个世界

ByNASA中文

On the northwestern coast of Madagascar, the salty waters of the Mozambique Channel penetrate inland to join with the freshwater outflow of the Betsiboka River, forming Bombetoka Bay. Numerous islands and sandbars have formed in the estuary from the large amount of sediment carried in by the Betsiboka River and have been shaped by the flow of the river and the push and pull of tides. Learn more about Bombetoka Bay, Madagascar. Fifty years ago, on April 22, 1970, people around the world marked the first Earth Day. On this Earth Day, as we physically separate ourselves by necessity, we can still collectively appreciate the wondrous beauty of our planet and the extraordinary science that helps us understand how it all works – and we…

黑色大理石:我们的星球在璀璨的黑暗中

黑色大理石:我们的星球在璀璨的黑暗中

ByNASA中文

In the years since the 2011 launch of the NASA-NOAA Suomi National Polar-orbiting Partnership (NPP) satellite, a research team at the agency’s Goddard Space Flight Center has been analyzing night-lights data and developing new software and algorithms to make night lights imagery clearer, more accurate and readily available. This is one of several global images released in 2017. Learn more about this image. Fifty years ago, on April 22, 1970, people around the world marked the first Earth Day. On this Earth Day, as we physically separate ourselves by necessity, we can still collectively appreciate the wondrous beauty of our planet and the extraordinary science that helps us understand how it all works – and we can do it from our homes. Follow along this…