NASA·每日一图 | Page 44 of 146

用红树林稳定海岸线

ByNASA中文 2023年5月12日

A team member from the Environmental Management Branch at NASA’s Kennedy Space Center works to remove a mangrove seedling deposited by tropical winds on the shoreline of KARS Park at Kennedy in this image from April 12, 2023. This spring, workers in the area replaced sand and finished an offshore wave break. The mangroves will be repotted and held in nearby surface water protected from wind, waves, and ongoing maintenance activities until they can be replanted along the shoreline later. With its 140,000 acres located along the Atlantic coastline and within the Indian River Lagoon estuary, Kennedy has long taken measures to ensure its shorelines remain resilient. Mangroves are one of the greatest allies against erosion, as their root structure protects the shoreline in addition…

NASA·每日一图

万斯·大山，在太阳系中寻找生命

ByNASA中文 2023年5月11日

Vance I. Oyama holds a readout from the gas chromatograph in the life detection laboratory at NASA’s Ames Research Center in this picture from April 22, 1965. Oyama had a long career at NASA, during which he served as Life Detection Systems branch chief; he examined lunar soil samples and also helped design experiments for the Viking Mars Landers. Both he and his brother Jiro pioneered new areas of life sciences research at Ames. Visit the Asian American, Native Hawaiian, and Pacific Islander Heritage Month gallery. Image Credit: NASA/Emerson Shaw 1965年4月22日，在NASA艾姆斯研究中心的生命探测实验室里，万斯·I·大山（Vance I. Oyama）拿着气相色谱仪的读数。大山在NASA工作了很长时间，在此期间他担任生命探测系统部门的负责人；他调查过月球土壤样本，并帮助设计了维京号火星着陆器的实验。他和他的兄弟次郎都在艾姆斯大学开创了生命科学研究的新领域。浏览亚裔美国人、夏威夷原住民和太平洋岛民传统月画廊。影像来源：NASA/Emerson Shaw

NASA·每日一图

太空行走者斯蒂芬·鲍恩和苏丹·阿尔内亚迪离开探索号气闸舱

ByNASA中文 2023年5月10日

NASA astronaut Stephen Bowen and United Arab Emirates astronaut Sultan Alneyadi (partially obscured) are pictured in their spacesuits, exiting the International Space Station’s Quest airlock and beginning a spacewalk on April 28, 2023. The duo spent seven hours and one minute in the vacuum of space routing cables and installing insulation, readying the orbital outpost for its next set of roll-out solar arrays due to be installed after their delivery on the next SpaceX Dragon cargo mission. Image Credit: NASA 2023年4月28日，NASA宇航员斯蒂芬·鲍恩和阿拉伯联合酋长国宇航员苏丹·阿尔内亚迪（部分遮挡）穿着宇航服，离开国际空间站的探索号气闸舱，开始太空行走。两人在太空真空中花了7小时零1分钟布线电缆并安装绝缘材料，为轨道前哨的下一组太阳能电池阵列做好准备，这些太阳能电池阵列将在下一次SpaceX龙货运任务交付后安装。影像来源：NASA

NASA·每日一图

来自波波卡特佩特火山的羽流

ByNASA中文 2023年5月9日

Popocatépetl, one of Mexico’s most active volcanoes, has been erupting since 2005. On April 14, 2023, when this image was acquired by Landsat 8, monitoring systems detected water vapor, volcanic gases, and ash coming from the volcano. Plumes rose as high as 4.5 miles (7.3 kilometers). Learn more about Popocatépetl. Image Credit: NASA/Lauren Dauphin; USGS 波波卡特佩特尔火山是墨西哥最活跃的火山之一，自2005年以来一直在喷发。2023年4月14日，当地球资源卫星8号获取这张图像时，监测系统检测到了来自火山的水蒸气、火山气体和火山灰。羽流高达4.5英里（7.3公里）。了解关于波波卡特佩特火山的更多信息。影像来源：NASA/Lauren Dauphin; USGS

NASA·每日一图

冰上的眼睛

ByNASA中文 2023年5月6日

Curtis Flack (left) and Paul von Hardenberg inspect the ice formation on the spinner of an Advanced Air Mobility proprotor model tested in the Icing Research Tunnel at NASA’s Glenn Research Center in Cleveland. Data from the test will be used by icing researchers to better understand the risks of icing on electric vertical takeoff and landing vehicles, assisting those who design and certify new aircraft. Virtual tour of the Icing Research Tunnel Image credit: NASA / Jordan Salkin 柯蒂斯·弗莱克（左）和保罗·冯·哈登伯格在克利夫兰NASA格伦研究中心的结冰研究隧道中测试了一个先进的空气机动性比例模型，在旋转器上观察冰的形成。来自测试的数据将被结冰研究人员用来更好地了解电动垂直起降飞行器的结冰风险，帮助那些设计和认证新飞机的人。结冰研究隧道的虚拟之旅图片来源:NASA / Jordan Salkin

NASA·每日一图

一起探索宇宙

ByNASA中文 2023年5月5日

Miloslav Stašek, Ambassador of the Czech Republic to the United States (left), Foreign Affairs Minister for the Czech Republic, Jan Lipavský (second from left), NASA Administrator Bill Nelson (second from right), and Acting Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs Jennifer R. Littlejohn (right), are seen following the signing of the Artemis Accords on Wednesday, May 3, 2023. The Artemis Accords establish a practical set of principles to guide space exploration cooperation among nations, including those participating in NASA’s Artemis program. The Czech Republic is the twenty fourth country to sign the Artemis Accords. Image Credit: NASA/Joel Kowsky 2023年5月3日，星期三，捷克共和国驻美国大使米洛斯拉夫·斯塔克（左）、捷克共和国外交部长扬·利帕夫斯克（左二）、NASA局长比尔·纳尔逊（右二）和负责海洋和国际环境与科学事务的代理助理国务卿詹妮弗·R·利特约翰（右）在签署《阿尔忒弥斯协议》后合影。《阿尔忒弥斯协议》建立了一套实用的原则，指导各国之间的太空探索合作，包括参与NASA阿尔忒弥斯计划的国家。捷克共和国是第24个签署《阿尔忒弥斯协议》的国家。影像来源：NASA/Joel Kowsky

NASA·每日一图

哈勃太空望远镜拍摄到异常明亮的相互作用星系

ByNASA中文 2023年5月4日

This new image from NASA’s Hubble Space Telescope shows interacting galaxies known as AM 1214-255. These galaxies contain active galactic nuclei, or AGNs. An AGN is an extraordinarily luminous central region of a galaxy. Its extreme brightness is caused by matter whirling into a supermassive black hole at the galaxy’s heart. Hubble observed the galaxy closest to the center as part of an AGN survey, with the aim of compiling a dataset about nearby AGNs to be used as a resource for astronomers investigating AGN physics, black holes, host galaxy structure, and more. Image Credit: NASA, ESA, A. Barth (University of California – Irvine), and J. Dalcanton (University of Washington); Processing: Gladys Kober (NASA/Catholic University of America) 这张来自NASA哈勃太空望远镜的新图像显示了相互作用的星系，称为AM 1214-255。这些星系包含活动星系核（AGN）。AGN是星系中非常明亮的中心区域。它的极端亮度是由物质旋转进入星系中心的超大质量黑洞造成。作为AGN调查的一部分，哈勃观察了最靠近中心的星系，目的是汇编一个关于附近AGN的数据集，作为天文学家研究AGN物理学、黑洞、宿主星系结构等的资源。影像来源：NASA, ESA, A. Barth (University…

NASA·每日一图

中子星碰撞

ByNASA中文 2023年5月4日

Two neutron stars begin to merge in this illustration, blasting a jet of high-speed particles and producing a cloud of debris. These gamma-ray bursts (GRBs) are the most powerful events in the universe. Scientists think these kinds of events are factories for a significant portion of the universe’s heavy elements, including gold. They based their estimates on the rate of short burst GRBs thought to occur across the cosmos, but a Dec. 11, 2021, discovery showed they’ll need to factor long bursts into their calculations as well. For the last few decades, astronomers have generally divided GRBs into two categories. Long bursts emit gamma rays for two seconds or more and originate from the formation of dense objects like black holes in the centers of…

NASA·每日一图

宇航员谢尔·林德格伦

ByNASA中文 2023年5月4日

“I think that getting to be a crewmember on the International Space Station, and getting to serve there over the course of two long-duration stays, we really feel like we are bridge-builders. “We are actively building the bridge to the Moon and then on to Mars. We, and the science that we do and the operations we conduct, are bringing together these discrete building blocks and putting them on a bridge to prepare us for these long-duration missions. Especially when we go to Mars, I mean, we’re talking about [missions longer than] two years. We’re doing that science, we’re doing those space operations, but we’re serving as human subjects, too. We’ve learned a lot over the past two decades and we continue to learn a…

NASA·每日一图

哈勃太空望远镜拍摄到一个难以捉摸的星系团

ByNASA中文 2023年4月29日

A menagerie of interesting astronomical finds are visible in this image from the NASA/ESA Hubble Space Telescope. In addition to several large elliptical galaxies, a ring-shaped galaxy is lurking on the right of the image. A pair of bright stars are also visible at the left of the image, notable for their colorful crisscrossing diffraction spikes. This collection of astronomical curiosities is the galaxy cluster ACO S520, located in the constellation Pictor and captured by Hubble’s Advanced Camera for Surveys. ACO S520 represents one of a series of Hubble observations searching for massive, luminous galaxy clusters that had not been captured by earlier surveys. Astronomers took advantage of occasional gaps in Hubble’s busy schedule to capture images of these barely explored galaxy clusters, revealing a…