繁星之夜

繁星之夜

ByNASA中文

The Hubble Space Telescope captured a crowd of stars that looks rather like a stadium darkened before a show, lit only by the flashbulbs of the audience’s cameras. Yet the many stars of this object, known as Messier 107, are not a fleeting phenomenon, at least by human reckoning of time – these ancient stars have gleamed for many billions of years. Messier 107 is one of more than 150 globular star clusters found around the disc of the Milky Way galaxy. These spherical collections each contain hundreds of thousands of extremely old stars and are among the oldest objects in the Milky Way. The origin of globular clusters and their impact on galactic evolution remains somewhat unclear, so astronomers continue to study them. Messier…

类星体像海啸一样撕裂星系

类星体像海啸一样撕裂星系

ByNASA中文

Using the unique capabilities of NASA’s Hubble Space Telescope, a team of astronomers has discovered the most energetic outflows ever witnessed in the universe. They emanate from quasars and tear across interstellar space like tsunamis, wreaking havoc on the galaxies in which the quasars live. This illustration shows a distant galaxy with an active quasar at its center. A quasar emits exceptionally large amounts of energy generated by a supermassive black hole fueled by infalling matter. Using the unique capabilities of Hubble, astronomers have discovered that blistering radiation pressure from the vicinity of the black hole pushes material away from the galaxy’s center at a fraction of the speed of light. The “quasar winds” are propelling hundreds of solar masses of material each year. This…

教育立方体卫星将由维珍轨道的运载器一号空射火箭发射

教育立方体卫星将由维珍轨道的运载器一号空射火箭发射

ByNASA中文

Ten NASA-sponsored CubeSats are preparing to fly on the agency’s next Educational Launch of Nanosatellites (ELaNa) mission, making this the first payload carried by Virgin Orbit’s LauncherOne rocket. With the small satellites safely secured inside the payload fairing, and the fairing mated to the rocket, Virgin Orbit is gearing up for ELaNa 20, the Dec.19, 2020, Launch Demo 2 flight from the Mojave Air and Space Port in California. In this image, Virgin Orbit teammates complete a dry run of the payload encapsulation process in Aug. 2020 inside their “Nebula” payload processing facility. Learn more. Image Credit: Virgin Orbit/Greg Robinson 美国宇航局资助的10颗立方体卫星正准备执行该机构下一次教育性质的纳米卫星发射(ELaNa)任务，这将是维珍轨道公司的运载器一号空射火箭携带的首个有效载荷。 随着小型卫星安全地固定在有效载荷整流罩内，并且整流罩与火箭对接，维珍轨道公司正在为2020年12月19日在加州莫哈韦航空航天港为ELaNa 20日进行发射演示飞行作好准备。 在这张图片中，维珍轨道公司的团队于2020年8月在他们的“星云”有效载荷处理设施内完成了有效载荷封装过程的模拟运行。 了解更多。 图片来源：Virgin Orbit / Greg Robinson

使用兰利的14乘22英尺亚音速风洞进行50年的研究

使用兰利的14乘22英尺亚音速风洞进行50年的研究

ByNASA中文

Dec. 11, 2020, marks the 50th anniversary of NASA’s Langley Research Center’s 14×22 Subsonic Wind Tunnel. The facility is used to assess aerodynamic performance of aircraft over a wide range of takeoff, landing, cruise, and high angle-of-attack conditions. It can provide acoustic, tethered free-flight, and forced-oscillation testing, motorsports research, aerodynamic material design studies and more. The tunnel has been used by aircraft manufacturers, defense industry partners, the Department of Defense, and other government organizations. NASA projects have included researchers working space, science, exploration, and aeronautics programs in the continuing endeavor to achieve our NASA mission. In this photo, engineers led by researcher Greg Gatlin have sprayed fluorescent oil on a 5.8 percent scale model of a futuristic hybrid wing body during tests in the tunnel….

介绍阿尔忒弥斯宇航员

介绍阿尔忒弥斯宇航员

ByNASA中文

Vice President Mike Pence introduces NASA astronauts, from left, Jessica Meir, Joseph Acaba, Anne McClain, Matthew Dominick, and Jessica Watkins during a meeting of the National Space Council inside the Apollo/Saturn V Center at the Kennedy Space Center Visitor Complex in Florida on Dec. 9, 2020. Meir, Acaba, McClain, Dominick, and Watkins are among the initial team of 18 astronauts eligible for early Artemis missions on and around the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024. Image Credit: NASA/Kim Shiflett 2020年12月9日，在佛罗里达州肯尼迪航天中心的阿波罗/土星5号中心举行的国家航天委员会会议上，副总统迈克·彭斯(左起)介绍NASA宇航员杰西卡·梅尔、约瑟夫·阿卡巴、安妮·麦克莱恩、马修·多米尼克和杰西卡·沃特金斯。梅尔、阿卡巴、麦克莱恩、多米尼克和沃特金斯是首批18名宇航员中的一员，他们有资格在月球上和周围执行早期的阿尔忒弥斯飞行任务。根据阿尔忒弥斯计划，美国宇航局将在2024年将首位女性和下一位男性送上月球。 影像来源：NASA/Kim Shiflett

3D打印火箭部件和宇宙飞船的未来

3D打印火箭部件和宇宙飞船的未来

ByNASA中文

Future lunar landers might come equipped with 3D printed rocket engine parts that help bring down overall manufacturing costs and reduce production time. NASA is investing in advanced manufacturing – one of five industries of the future – to make it possible. Through a series of hot-fire tests in November, NASA demonstrated that two additively manufactured engine components – a copper alloy combustion chamber and nozzle made of a high-strength hydrogen resistant alloy – could withstand the same extreme combustion environments that traditionally manufactured metal structures experience in flight. This image shows the hot-fire testing of an additively manufactured copper alloy combustion chamber and a nozzle made of a high-strength hydrogen resistant alloy. Learn more about the 3D printing process. Image Credit: NASA 未来的月球着陆器可能会配备3D打印的火箭发动机零件，以帮助降低总体制造成本并减少生产时间。 NASA正在投资于先进制造业（未来的五个行业之一）以使其成为可能。…

NASA和波音公司完成了一系列星际客机的降落伞测试

NASA和波音公司完成了一系列星际客机的降落伞测试

ByNASA中文

NASA and Boeing have completed Starliner’s last parachute balloon-drop test designed to strengthen the spacecraft’s landing system ahead of crewed flights to and from the International Space Station. Read the full story. The tests, developed by Boeing and NASA, used six balloon-drop tests of a Starliner test article to gather supplemental performance data on the spacecraft’s parachutes and landing system. Each drop test focused on a different set of adverse conditions and used pre-flown parachutes to evaluate reusability margins for future missions. Starliner will be the first American-made orbital crew capsule to land on land. The spacecraft uses a series of parachutes and airbags that deploy at specific altitudes allowing Starliner to touch down gently in the desert of the western United States. NASA also…

从地球上看空间站

从地球上看空间站

ByNASA中文

The International Space Station is seen in this 13 second exposure as it flies over Arlington, Virginia, Sunday, Dec. 6, 2020. Onboard the station are: NASA astronauts Kate Rubins, Shannon Walker, Victor Glover, Mike Hopkins; Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi; and, Russian cosmonauts Sergey Ryzhikov, and Sergey Kud-Sverchkov. Image Credit: NASA/Bill Ingalls 当2020年12月6日星期日国际空间站飞越弗吉尼亚州阿灵顿时，在这13秒钟的曝光中拍摄到了国际空间站。空间站上有：NASA宇航员凯特·鲁宾斯(Kate Rubins)、香农·沃克(Shannon Walker)、维克多·格洛弗(Victor Glover)、迈克·霍普金斯(Mike Hopkins)；日本宇宙航空研究开发机构(JAXA)宇航员野口宗一(Soichi Noguchi)还有俄罗斯宇航员谢尔盖·雷吉科夫（Sergey Ryzhikov）和谢尔盖·库德·斯维奇科夫（Sergey Kud-Sverchkov）。 影像来源：NASA/Bill Ingalls

哈勃望远镜凝视着宇宙仙境

哈勃望远镜凝视着宇宙仙境

ByNASA中文

This large expanse of space captured with the Hubble Space Telescope features the galaxy SDSS J225506.80+005839.9. Unlike many other extravagant galaxies and stunning nebulae imaged by Hubble, this galaxy does not have a short, popular name, and is only known by its long name given in the Sloan Digital Sky Survey, which refers to its coordinates in the sky. This galaxy – visible in the center right portion of the image – and its many wondrous neighboring galaxies lie in the constellation of Pisces (the Fish). This is a post-starburst galaxy, which is a product of galaxies that have merged within the past billion years. This merger event drove gas to the galaxy’s center and created an abundance of new stars, of which the brightest…

在国际空间站的世界之窗内放松

在国际空间站的世界之窗内放松

ByNASA中文

JAXA (Japan Aerospace Exploration Agency) and Expedition 64 astronaut Soichi Noguchi relaxes at the end of the work day inside the seven-windowed cupola, the International Space Station’s “window to the world.” The orbiting lab was flying above the South Pacific at the time this photograph was taken on Nov. 27, 2020. December will be a busy month as the Expedition 64 gears up for space freighter traffic. On Wednesday, Dec. 2, the entire crew trained for the unlikely event of an emergency on the station. They coordinated with mission controllers around the world practicing their communication, locating safety gear and maneuvering through escape routes. The crew also is preparing for the arrival of a new SpaceX Dragon cargo craft on Sunday, Dec. 6. Image Credit:…