The bright Sun dissects the airglow above Earth’s horizon in this view photographed with a digital still camera from the space shuttle Columbia during the STS-107 mission. 在STS-107任务期间，从哥伦比亚号航天飞机上用数码相机拍摄到的这一景象中，明亮的太阳分割了地球地平线上的气辉。 Columbia and the STS-107 crew perished during re-entry on Feb. 1, 2003. 哥伦比亚号和STS-107机组人员在2003年2月1日重返大气层时遇难。 Day of Remembrance 2022 2022年纪念日 #NASARemembers Image Credit: NASA 影像来源：NASA
To learn how ocean water is melting glaciers, NASA’s Oceans Melting Greenland mission extensively surveyed the coastline of the world’s largest island. The airborne mission found that Greenland’s glaciers that empty into the ocean, like Apusiaajik Glacier shown here, are at greater risk of rapid ice loss than previously understood. 为了了解海水是如何融化冰川的，NASA的海洋融化格陵兰岛任务广泛地调查了世界上最大岛屿的海岸线。这项空中任务发现，像图中所示的阿普斯阿吉克冰川一样，流入海洋的格陵兰岛冰川面临着比之前理解的更快的冰川流失风险。 NASA Greenland Mission Completes Six Years of Mapping Unknown Terrain NASA格陵兰岛任务完成了六年的未知地形测绘工作 Image Credit: NASA/JPL-Caltech 影像来源：NASA/JPL-Caltech
In this image taken in 1985, four members of the Challenger STS-51L crew – Michael J. Smith, left, Ellison S. Onizuka, Judith A. Resnik, and Francis R. “Dick” Scobee – train on the flight deck of the shuttle crew compartment. 在1985年拍摄的这张照片中，挑战者号STS-51L机组的四名成员——迈克尔·J·史密斯（左）、埃里森·S·奥尼苏卡、朱迪思·A·雷斯尼克和弗朗西斯·R·迪克·斯科比在航天飞机机组人员舱的飞行甲板上接受训练。 Just 73 seconds after launch on the morning of Jan. 28, 1986, a booster joiint failed and caused the shuttle Challenger to break apart, taking the lives of all seven crew members. 1986年1月28日早晨，发射后仅73秒，助推器接头发生故障，导致挑战者号航天飞机解体，7名机组人员全部遇难。 Each January NASA pauses to honor members of the NASA family who lost their lives while furthering the cause of exploration and discovery, including the crews of Apollo 1 and space shuttles Challenger and Columbia. In 2022, the Day of Remembrance was observed on Jan. 27. This year’s NASA Day of…
In this June 1966 photo, the Apollo 1 crew practices water egress procedures with a full scale boilerplate model of the spacecraft. In the water at right are astronauts Ed White and Roger Chaffee (foreground). In raft near the spacecraft is astronaut Gus Grissom. NASA swimmers are in the water to assist in the practice session that took place at Ellington AFB, near the then-Manned Spacecraft Center, Houston. On Jan. 27, 1967, tragedy struck on the launch pad at Cape Kennedy during a preflight test for Apollo 204 (AS-204). The mission was to be the first crewed flight of Apollo, and was scheduled to launch Feb. 21, 1967. Astronauts Virgil Grissom, Edward White, and Roger Chaffee lost their lives when a fire swept through the…
Much like the sky, rivers are rarely painted one color. Rivers around the world appear in shades of yellow, green, blue, and brown—and subtle changes in the environment can alter their colors. 就像天空一样，河流很少被涂成一种颜色。世界各地的河流呈现出黄色、绿色、蓝色和棕色的色调——环境的细微变化会改变它们的颜色。 New research shows the dominant color has changed in about one-third of large rivers in the continental United States over the past 35 years. 新的研究表明，在过去35年中，美国大陆约三分之一的大型河流的主要颜色发生了变化。 The figure above shows data from a map of river color for the contiguous United States. The rivers are colored as they would approximately appear to the human eye. The map was built from 234,727 images collected by Landsat satellites between 1984 and 2018. The dataset includes 67,000 miles (100,000 kilometers) of waterways of at least 200 feet (60 meters) wide. 上图显示了来自美国毗连河流颜色地图的数据。河流的颜色与人眼所见的大致相同。该地图是根据地球资源卫星在1984年至2018年期间收集的234,727张图像构建的。该数据集包括67,000英里（100,000公里）、至少200英尺（60 米）宽的水域。 While is not unusual…
This colorized schlieren image is of a small-scale model of NASA’s X-59 Quiet SuperSonic Technology (QueSST) airplane taken inside NASA Glenn Research Center’s 8- by- 6-foot Supersonic Wind Tunnel during a recent boom test. The multiple-week campaign produced data sets and shockwave visuals that engineers from the agency’s Commercial Supersonic Technology project will use to validate boom-reducing technologies and sonic boom-predicting capabilities. The boom test at NASA Glenn was one of the final X-59 QueSST wind tunnel evaluations as the agency prepares for the aircraft’s first flight later this year, leading to further low-boom validation in flight in 2023. 这幅彩色纹影图像是NASA X-59静音超音速技术（QUSST）飞机的小型模型，拍摄于NASA格伦研究中心的8乘6英尺超音速风洞中，当时正在进行音爆测试。这次为期数周的实验产生了数据集和冲击波图像，来自NASA的商业超音速技术项目的工程师将使用这些数据集来验证减爆技术和音爆预测能力。在格伦进行的音爆测试是X-59 QueSST最后的风洞评估之一，该机构为今年晚些时候X-59 QueSST的首次飞行做准备，并将在2023年的飞行中进一步低音爆验证。 Image Credit: Quentin Schwinn, NASA Glenn/ATS 影像来源：Quentin Schwinn, NASA Glenn/ATS
Venus hides a wealth of information that could help us better understand Earth and exoplanets, or those planets outside our solar system. NASA’s Jet Propulsion Laboratory is designing mission concepts to survive the planet’s extreme temperatures and atmospheric pressure. This image is a composite of data from NASA’s Magellan spacecraft and Pioneer Venus Orbiter. 金星隐藏着丰富的信息，可以帮助我们更好地了解地球和系外行星。NASA喷气推进实验室正在设计任务概念，以在地球极端温度和大气压力下生存。这张图片是美国宇航局麦哲伦飞船和先驱金星轨道探测器的数据合成。 Venus is Earth’s nearest planetary neighbor. The two new Discovery Program missions to study our neighbor aim to understand how Venus became an inferno-like world when it has so many other characteristics similar to ours – and may have been the first habitable world in the solar system, complete with an ocean and Earth-like climate. 金星是地球最近的行星邻居。研究我们邻居的两项新的发现计划任务旨在了解金星是如何成为一个类似地狱的世界，而它有如此多的其他特征与我们相似——而且可能是太阳系中第一个宜居世界，有海洋和类似地球的气候。 Image Credit: NASA/JPL-Caltech 影像来源：NASA/JPL-Caltech
The spiral arms of the galaxy NGC 3318 are lazily draped across this image from the NASA/ESA Hubble Space Telescope. This spiral galaxy lies in the constellation Vela and is roughly 115 million light-years away from Earth. Vela was originally part of a far larger constellation, known as Argo Navis after the fabled ship Argo from Greek mythology, but this unwieldy constellation proved to be impractically large. Argo Navis was split into three separate parts called Carina, Puppis, and Vela – each named after part of the Argo. As befits a galaxy in a nautically inspired constellation, the outer edges of NGC 3318 almost resemble a ship’s sails billowing in a gentle breeze. NGC 3318星系的旋臂懒洋洋地垂在这张来自NASA/ESA哈勃太空望远镜的图像上。这个旋涡星系位于船帆座，距离地球约1.15亿光年。船帆座原本是一个大得多的星座的一部分，以希腊神话中传说中的阿尔戈号为名，被称为阿尔戈·纳维斯星座，但这个笨拙的星座被证明是不切实际的大。阿尔戈·纳维斯星座被分割成三个独立的部分，分别是船底座、船尾座和船帆座，每个部分都是以阿尔戈号的一部分命名。NGC 3318的外边缘就像是在微风中飘动的船帆，这与一个以航海为灵感的星座中的星系非常相称。 Text credit: European Space Agency (ESA) Image credit: ESA/Hubble…
In this image from Jan. 9, 2022, NASA astronaut Kayla Barron peered out from a window inside the cupola, the International Space Station’s “window to the world.” Prominent station components in this photograph include the Kibo laboratory module and its external pallet, the Japanese robotic arm, and the Leonardo Permanent Multipurpose Module. 在这张2022年1月9日拍摄的照片中，NASA宇航员凯拉·巴伦（Kayla Barron）从圆顶内的窗户向外张望，圆顶是国际空间站的“世界之窗”照片中突出的空间站组件包括Kibo实验室模块及其外部托盘、日本机械臂和莱昂纳多永久性多用途模块。 Image Credit: NASA 影像来源：NASA
Retired U.S. Air Force Brig. Gen. Charles McGee, left, spoke with NASA astronaut Alvin Drew during a Black History Month program titled “Trailblazers, The Story of a Tuskegee Airman,” Wednesday, Feb. 5, 2020, at NASA Headquarters in Washington, D.C. McGee, a pilot with the Tuskegee Airmen during World War II, was a career officer in the Air Force also serving during the Korean and Vietnam Wars. He passed away earlier this week at the age of 102. 退役的美国空军准将查尔斯·麦基（左）在2020年2月5日星期三在华盛顿特区的美国宇航局总部举行的题为“开拓者，一个塔斯基吉空军的故事”的黑人历史月活动中与美国宇航局宇航员阿尔文·德鲁交谈。麦基是第二次世界大战期间塔斯克吉空军的一名飞行员，曾在朝鲜和越南战争期间在空军服役。他于本周早些时候去世，享年102岁。 Over his 30 years of service he flew 409 combat missions. He was one of the 355 Tuskegee pilots who flew in combat. 在他30年的服役生涯中，他执行了409次战斗任务。他是355名在战斗中飞行的塔斯基飞行员之一。 Image Credit: NASA/Joel Kowsky 影像来源：NASA/Joel Kowsky
