研究城市空中交通

研究城市空中交通

ByNASA中文

In this March 2021 image, Flight Research Inc.’s Bell OH-58C Kiowa helicopter hovered over a helipad after completing an urban air mobility (UAM) approach at NASA’s Armstrong Flight Research Center. The Advanced Air Mobility National Campaign used the helicopter as a representative vehicle to better understand how a future UAM vehicle will need to operate in a congested urban air environment. Image Credit: NASA/Ken Ulbrich 在这张2021年3月的照片中，飞行研究公司（Flight Research Inc.）的贝尔OH-58C基奥瓦直升机在NASA阿姆斯特朗飞行研究中心完成城市空气机动性(UAM)进近后，在一个直升机停机坪上空盘旋。先进空中机动全国运动将直升机作为一种代表车辆，以更好地了解未来UAM车辆将需要如何在拥挤的城市空气环境中运行。 影像来源：NASA/Ken Ulbrich

哈勃发现宇宙云的银色光芒

哈勃发现宇宙云的银色光芒

ByNASA中文

This image taken with the NASA/ESA Hubble Space Telescope showcases the emission nebula NGC 2313. Emission nebulae are bright, diffuse clouds of ionized gas that emit their own light. The bright star V565 (center of the image) highlights a silvery, fan-shaped veil of gas and dust, while the right half of this image is obscured by a dense cloud of dust. Nebulae with similar shapes were once called “cometary nebulae” because the star with an accompanying bright fan looked like a comet with a bright tail. The language that astronomers use changes as we become better acquainted with the universe, and astronomical history is littered with now-obsolete phrases to describe objects in the night sky, such as “spiral nebulae” for spiral galaxies. Text credit: European…

NASA X-59发动机进气口的视图

NASA X-59发动机进气口的视图

ByNASA中文

NASA’s X-59 requires the use of creative and strategic supersonic technologies to control and soften the jarring sound that hits the ground as the aircraft flies faster than the speed of sound. One of these creative technologies is the placement of the X-59 engine inlet. This visual is a closeup looking downstream inside of the X-59’s engine inlet where, later in the assembly process, the 13-foot GE F414 engine will be placed. The main purpose of the engine inlet is to condition or smooth out and slow down the air before it actually gets to the engine. Before the X-59 engine is installed, there will be pressure measurement sensors mounted to the inlet walls to help the team monitor the inlet air flow and flight…

系统工程师艾伦·陈

系统工程师艾伦·陈

ByNASA中文

Perseverance entry, descent, and landing lead Allen Chen gives remarks during a NASA Perseverance rover mission landing update Feb. 17, 2021, at NASA’s Jet Propulsion Laboratory. The Perseverance Mars rover landed on Mars Feb. 18, 2021. A key objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover will be the first mission to collect, store, and return to Earth Martian rocks and surface materials, which will help researchers characterize the planet’s geology and past climate and ultimately pave the way for human exploration of the Red Planet. #AAPI #AsianAmericanPacificIslanderHeritageMonth Image Credit: NASA/Bill Ingalls [rml_read_more] 2021年2月17日，毅力号火星车在NASA喷气推进实验室着陆更新期间，艾伦·陈发表讲话。毅力号火星车于2021年2月18日登陆火星。毅力号火星任务的一个关键目标是天体生物学，包括寻找古代微生物生命的迹象。毅力号火星车将是首个收集、储存并返回地球的火星岩石和表面材料的任务，这将有助于研究人员描述火星的地质和过去的气候，并最终为人类探索这颗红色星球铺平道路。 #AAPI #AsianAmericanPacificIslanderHeritageMonth 图片来源:NASA/Bill Ingalls

OSIRIS-REx告别小行星贝努

OSIRIS-REx告别小行星贝努

ByNASA中文

On April 9, 2021, NASA’s Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx) spacecraft took one last look at Bennu, the asteroid from which it scooped up a sample last October. Slated for return to Earth in 2023, the mission is on track to deliver a sample of pristine material left over from the formation of our solar system into the hands of researchers on Earth. This image, the last one taken by the spacecraft, shows crescent Bennu with its night side merging with the complete black of space as the spacecraft pushed away from Bennu. For two years, OSIRIS-REx studied the asteroid, revealing the many secrets of this ancient body and delivering clues about its rubble-pile-like consistency and surface terrain, which turned out…

观察早期宇宙中的恒星

观察早期宇宙中的恒星

ByNASA中文

This June 2020 image from the Hubble Space Telescope shows the galaxy cluster MACS J0416. This is one of six galaxy clusters being studied by the Hubble Frontier Fields program, which produced the deepest images of gravitational lensing ever made. Scientists used intracluster light (visible in blue) to study the distribution of dark matter within the cluster. Image Credit: NASA, ESA and M. Montes (University of New South Wales) [rml_read_more] 这张哈勃太空望远镜在2020年6月拍摄的图像显示了星系星团MACS J0416。这是哈勃边疆场计划正在研究的六个星系团之一，该项目产生了迄今为止最深刻的引力透镜图像。科学家们星系内的光（蓝色可见）研究了星系内暗物质的分布。 图片提供：NASA，ESA和M.Montes（新南威尔士大学）

哈勃凝视着充满宇宙线索的星团

哈勃凝视着充满宇宙线索的星团

ByNASA中文

This detailed image features Abell 3827, a galaxy cluster that offers a wealth of exciting possibilities for study. Hubble observed it in order to study dark matter, which is one of the greatest puzzles cosmologists face today. The science team used Hubble’s Advanced Camera for Surveys and Wide Field Camera 3 to complete their observations. The two cameras have different specifications and can observe different parts of the electromagnetic spectrum, so using them both allowed the astronomers to collect more complete information. Hubble also observed Abell 3827 previously because of the interesting gravitational lens at its core. Looking at this cluster of hundreds of galaxies, it is amazing to recall that less than 100 years ago, many astronomers thought the Milky Way was the only…

嗨，瑞奇：这周是教师感谢周！

嗨，瑞奇：这周是教师感谢周！

ByNASA中文

Astronaut Ricky Arnold is shown on his first spacewalk as a crewmember on STS-119. Before he joined the Astronaut Corps, Arnold was a teacher in classrooms all over the world, from Malaysia to Romania. Arnold also served aboard the International Space Station on Expedition 55/56. In this image, during the six-hour, seven-minute spacewalk, Arnold and fellow astronaut Steve Swanson (out of frame) connected bolts to permanently attach the S6 truss segment to S5. The spacewalkers plugged in power and data connectors to the truss, prepared a radiator to cool it, opened boxes containing the new solar arrays and deployed the Beta Gimbal Assemblies containing masts that support the solar arrays. The blackness of space and Earth’s horizon provide the backdrop for the scene. Video –…

肯尼迪总统授予艾伦·谢泼德美国航空航天局杰出服务勋章

肯尼迪总统授予艾伦·谢泼德美国航空航天局杰出服务勋章

ByNASA中文

On May 5, 1961, Alan Shepard – one of NASA’s first seven astronauts – became the first American in space. In this image, President John F. Kennedy, right, awards NASA’s Distinguished Service Medal to astronaut Shepard in a Rose Garden ceremony on May 8, 1961, at the White House. In the background are the other members of the Mercury Seven, NASA’s original astronauts. Shepard’s Freedom 7 Mercury capsule flew a suborbital trajectory lasting 15 minutes 22 seconds. His spacecraft landed in the Atlantic Ocean where he and his capsule were recovered by helicopter and transported to the awaiting aircraft carrier U.S.S. Lake Champlain. View the Alan Shepard image gallery. Image Credit: NASA 1961年5月5日NASA首批七名宇航员之一的艾伦·谢泼德成为第一个进入太空的美国人。 在这张照片中，总统约翰·F·肯尼迪(右)在1961年5月8日的白宫玫瑰园仪式上向宇航员谢博德颁发NASA的杰出服务奖章。背景是水星7号的其他成员，这是NASA最初的宇航员。 谢泼德的自由7号水星太空舱沿亚轨道飞行了15分22秒。他的宇宙飞船降落在大西洋上，他和他的太空舱在那里被直升机回收，并被运到等待的美国桑普兰湖号航空母舰上。 查看艾伦·谢泼德图片库。 图片来源：NASA

发现环双星系统

发现环双星系统

ByNASA中文

May the Fourth Be With You! When the first Star Wars movie was released in 1977, it featured the now-iconic two-sun, “circumbinary” planet Tatooine. At that time astronomers didn’t really know if such solar systems existed. Indeed, the first extra-solar planet wasn’t detected until the early 1990s. And, the first actual circumbinary planet was detected in 2005, and it was a Jupiter-size planet orbiting a system composed of a sun-like star and a brown dwarf. Fast forward a few decades and researchers working with data from the Transiting Exoplanet Survey Satellite (TESS) discovered the mission’s first circumbinary planet, a world orbiting two stars, as shown in this image from January 2020. The planet, called TOI 1338 b, is around 6.9 times larger than Earth, or…