肯尼迪航天中心盛开的野花

肯尼迪航天中心盛开的野花

ByNASA中文

With wildflowers surrounding the view, NASA’s Space Launch System (SLS) Moon rocket – carried atop the Crawler-Transporter 2 – arrives at Launch Pad 39B at the agency’s Kennedy Space Center in Florida on June 6, 2022. The first in an increasingly complex series of missions, Artemis I will test the SLS rocket and Orion spacecraft as an integrated system prior to crewed flights to the Moon. Through Artemis, NASA will land the first woman and first person of color on the lunar surface, paving the way for a long-term lunar presence and using the Moon as a steppingstone before venturing to Mars. Read more about the Artemis I mission. Image credit: NASA/Ben Smegelsky 2022年6月6日，NASA的太空发射系统（SLS）月球火箭搭载在履带式运输机2上，抵达位于佛罗里达州肯尼迪航天中心的39B发射台，周围环绕着野花。 作为越来越复杂的一系列任务中的第一个，阿尔忒弥斯一号将在载人登月之前测试SLS火箭和猎户座航天器作为一个集成系统。通过阿尔忒弥斯，NASA将让第一位女性和第一位有色人种登上月球表面，为长期登月铺平道路，并将月球作为登陆火星之前的踏脚石。 阅读有关阿尔忒弥斯一号任务的更多信息。 影像来源：NASA/Ben Smegelsky

詹姆斯·韦伯太空望远镜在车轮星系捕捉到了恒星体操

詹姆斯·韦伯太空望远镜在车轮星系捕捉到了恒星体操

ByNASA中文

一个巨大的粉红色斑点星系，像一个轮子，内部有一个小的椭圆形的内环，中间是尘土飞扬的蓝色。左边有两个较小的螺旋星系，在黑色背景下大小大致相同。 影像来源：NASA, ESA, CSA, STScI NASA的詹姆斯·韦伯太空望远镜观察了混乱的车轮星系，揭示了有关恒星形成和星系中心黑洞的新细节。韦伯强大的红外观测产生了这张车轮星系和两个较小伴星系的详细图像，背景是许多其他星系。这张图片提供了一个新的视角，展示了车轮星系在数十亿年中是如何变化的。 车轮星系位于约5亿光年外的玉夫座中，是一个罕见的景象。它的外观，很像马车的车轮，这是一个激烈事件的结果——一个大的螺旋星系和一个在这张照片中看不到的小星系之间的高速碰撞。星系比例的碰撞会导致所涉及的星系之间发生一系列不同的、较小的事件；车轮星系也不例外。 这次碰撞最显著地影响了星系的形状和结构。车轮星系有两个环——一个明亮的内环和一个环绕的彩色环。这两个环从碰撞中心向外扩展，就像池塘里扔了一块石头后的涟漪。由于这些独特的特征，天文学家将其称为“环状星系”，这种结构不像银河系这样的螺旋星系那样常见。 明亮的核心包含大量热尘埃，最亮的区域是巨大的年轻星团的家园。另一方面，膨胀了约4.4亿年的外环，主要由恒星形成和超新星组成。当这个外环膨胀时，它会冲向周围的气体并引发恒星的形成。 包括哈勃太空望远镜在内的其他望远镜此前也曾对车轮星系进行过观测。但这个引人注目的星系一直笼罩在神秘之中——也许是字面意思，因为有大量的灰尘遮挡了视线。韦伯凭借其探测红外光的能力，现在对车轮星系的性质有了新的认识。 韦伯的主要成像仪近红外相机（NIRCam）在0.6到5微米的近红外范围内观察，可以看到关键波长的光，可以显示比可见光中观察到的恒星更多的恒星。这是因为年轻的恒星，其中许多是在外环形成，在红外线下观察时，较少受到尘埃的遮挡。在该图像中，NIRCam数据为蓝色、橙色和黄色。该星系显示出许多单独的蓝点，这些蓝点是单独的恒星或恒星形成的口袋。NIRCam还揭示了较老恒星群和核心致密尘埃的平滑分布或形状与外部较年轻恒星群的块状形状之间的差异。 这张来自韦伯的中红外仪器（MIRI）的图像显示了一组星系，包括一个被称为车轮星系的大型扭曲环状星系。车轮星系位于5亿光年之外的玉夫座，由明亮的内环和活跃的外环组成。虽然这个外环有很多恒星形成，但中间的尘埃区域显示了许多恒星和星团。 影像来源：NASA, ESA, CSA, STScI, Webb ERO Production Team 然而，要了解星系中尘埃的更详细细节，需要使用韦伯的中红外仪器（MIRI）。MIRI数据在合成图像中显示为红色。它揭示了车轮星系内富含碳氢化合物和其他化合物的区域，以及硅酸盐尘埃，就像地球上的大部分尘埃一样。这些区域形成了一系列螺旋辐条，基本上形成了星系的骨架。这些辐条在2018年发布的之前哈勃观测中很明显，但在这张韦伯图像中，它们变得更加突出。 韦伯的观察结果强调了车轮星系正处于一个非常短暂的阶段。该星系可能是一个正常的旋涡星系，就像银河系在碰撞前一样，将继续转变。虽然韦伯为我们提供了车轮星系当前状态的快照，同时也让我们了解了这个星系过去发生了什么，以及它在未来将如何演变。 詹姆斯·韦伯太空望远镜是世界上首屈一指的太空科学天文台。韦伯将解开我们太阳系中的谜团，展望其他恒星周围的遥远世界，探索我们宇宙的神秘结构和起源以及我们在其中的位置。韦伯是由NASA及其合作伙伴 ESA和CSA领导的一项国际计划。 参考来源： https://www.nasa.gov/feature/goddard/2022/webb-captures-stellar-gymnastics-in-the-cartwheel-galaxy

NASA向尼切尔·尼科尔斯致敬

NASA向尼切尔·尼科尔斯致敬

ByNASA中文

NASA celebrates the life of Nichelle Nichols, Star Trek actor, trailblazer, and role model, who symbolized to so many what was possible. She partnered with us to recruit some of the first women and minority astronauts, and inspired generations to reach for the stars. In this photo from February 2012, Nichols was a featured guest speaker in the Building 8 auditorium at NASA’s Goddard Space Flight Center in Greenbelt, Md. at a special event commemorating of the life and legacy of Dr. Martin Luther King, Jr. Read more: Nichelle Nichols Helped NASA Break Boundaries on Earth and in Space Image credit: NASA/Goddard Space Flight Center/Pat Izzo NASA纪念切尔·尼科尔斯的一生，她是《星际迷航》的演员、开拓者和榜样，她向许多人展示了一切可能。她与我们合作,招募了第一批女性和少数族裔宇航员，并激励了几代人去探索星空。 在这张2012年2月的照片中，尼科尔斯在马里兰州格林贝尔特的美国宇航局戈达德航天飞行中心8号楼礼堂担任特邀演讲人，出席纪念小马丁·路德·金博士生平和遗产的特别活动。 阅读更多：尼切尔·尼科尔斯帮助NASA打破了地球和太空的界限 图片来源：NASA/Goddard Space Flight Center/Pat Izzo

天市右垣十一（蛇夫座ζ）：一颗有着复杂过去的恒星

天市右垣十一（蛇夫座ζ）：一颗有着复杂过去的恒星

ByNASA中文

Zeta Ophiuchi is a star with a complicated past, having likely been ejected from its birthplace by a powerful stellar explosion. A new look by NASA’s Chandra X-ray Observatory helps tell more of the story of this runaway star. Located about 440 light-years from Earth, Zeta Ophiuchi is a hot star that is 20 times more massive than the Sun. Previous observations have provided evidence that Zeta Ophiuchi was once in close orbit with another star, before being ejected at about 100,000 miles per hour when this companion was destroyed in a supernova explosion over a million years ago. Previously released infrared data from NASA’s now-retired Spitzer Space Telescope, seen in this new composite image, reveals a spectacular shock wave (red and green) that was…

木星北极附近的漩涡

木星北极附近的漩涡

ByNASA中文

As NASA’s Juno mission completed its 43rd close flyby of Jupiter on July 5, 2022, its JunoCam instrument captured this striking view of vortices — hurricane-like spiral wind patterns — near the planet’s north pole. These powerful storms can be over 30 miles (50 kilometers) in height and hundreds of miles across. Figuring out how they form is key to understanding Jupiter’s atmosphere, as well as the fluid dynamics and cloud chemistry that create the planet’s other atmospheric features. A NASA citizen science project, Jovian Vortex Hunter, seeks help from volunteer members of the public to spot and help categorize vortices and other atmospheric phenomena visible in JunoCam photos of Jupiter. As of July 2022, 2,404 volunteers had made 376,725 classifications using the Jovian Vortex…

进入（轨道）日出

进入（轨道）日出

ByNASA中文

The Sun’s rays begin to illuminate the Earth’s atmosphere as the International Space Station flew into an orbital sunrise 261 miles above Texas, as seen in this image taken by astronaut Bob Hines. The crew doesn’t just snap pretty pictures; the research aboard the station benefits humanity in numerous ways. This week, the 11th annual International Space Station Research and Development Conference runs through Thursday, July 28, 2022, in Washington. The full conference agenda is available online. NASA will provide live coverage of select panels from the conference on NASA Television, the NASA app, and the agency’s website. The event coincides with the publication of the 2022 edition of the International Space Station Benefits for Humanity, highlighting the advances in scientific knowledge on Earth, and…

为下一代飞行做准备

为下一代飞行做准备

ByNASA中文

Before NASA’s quiet supersonic X-59 aircraft takes to the skies, plenty of testing happens to ensure a safe first flight. One part of this safety check is to analyze data collected for the X-59’s flight control system through low-speed wind tunnel tests. The X-59 is central to NASA’s Quesst mission to expand supersonic flight and provide regulators with data to help change existing national and international aviation rules that ban commercial supersonic flight over land. The aircraft is designed to produce a gentle thump instead of a sonic boom. Recently, Lockheed Martin’s Skunk Works facility in Palmdale, California, completed low-speed wind tunnel tests of a scale model of the X-59’s forebody. The tests provided measurements of how wind flows around the aircraft nose and confirmed…

红色星球上的蓝色涟漪

红色星球上的蓝色涟漪

ByNASA中文

Though Mars is the Red Planet, false-color images can help us learn about its weather and geology. This image shows a variety of wind-related features on the Red Planet near the center of Gamboa Crater. Larger sand dunes form sinuous crests and individual domes. There are tiny ripples on the tops of the dunes, only several feet from crest-to-crest. These merge into larger mega-ripples about 30 feet apart that radiate outward from the dunes. The larger, brighter formations that are roughly parallel are called “Transverse Aeolian Ridges” (TAR). These TAR are covered with very coarse sand. The mega-ripples appear blue-green on one side of an enhanced color cutout while the TAR appear brighter blue on the other. This could be because the TAR are actively…

这是城市环境范围自主组合导航测试

这是城市环境范围自主组合导航测试

ByNASA中文

An Alta-X drone operated by NASA researchers flies over NASA Langley’s City Environment Range Testing for Autonomous Integrated Navigation (CERTAIN) as part of the Advanced Air Mobility project’s High Density Vertiplex (HDV) testing in April 2022. HDV is developing the necessary systems to enable urban drone flights that travel beyond visual sight. Learn more NASA Vertiport Research Takes Flight Image Credit: NASA/Robert Lorkiewicz 作为2022年4月高级空中交通项目高密度垂直复合（HDV）测试的一部分，由NASA研究人员操作的Alta-X无人机飞越NASA兰利的城市环境范围自主组合导航测试（CERTAIN）。 HDV正在开发必要的系统，以使城市无人机能够在视觉之外飞行。 了解更多信息 NASA垂直运输研究所开始飞行 图片来源：NASA/Robert Lorkiewicz

阿波罗11号机组人员为静海之旅进行训练

阿波罗11号机组人员为静海之旅进行训练

ByNASA中文

The Apollo 11 crew simulates deploying and using lunar tools on the surface of the Moon during a training exercise on April 22, 1969. Lunar module pilot Buzz Aldrin (left) uses a scoop and tongs to pick up a soil sample. Mission Commander Neil Armstrong holds a bag to receive the sample. In the background is a Lunar Module mockup. On July 16, 1969, the crew off Apollo 11, including command module pilot Michael Collins, launched into history on a journey to explore Earth’s only natural satellite. Landing on the Moon’s Mare Tranquillitatis, or Sea of Tranquility, on July 20, 1969, Armstrong and Aldrin became the first people to walk on another terrestrial body. At 5 p.m. EDT (21:00 UTC) on July 20, 2022, NASA…