一起探索宇宙

一起探索宇宙

ByNASA中文

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

哈勃太空望远镜拍摄到异常明亮的相互作用星系

哈勃太空望远镜拍摄到异常明亮的相互作用星系

ByNASA中文

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…

中子星碰撞

中子星碰撞

ByNASA中文

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…

宇航员谢尔·林德格伦

宇航员谢尔·林德格伦

ByNASA中文

“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…

哈勃太空望远镜拍摄到一个难以捉摸的星系团

哈勃太空望远镜拍摄到一个难以捉摸的星系团

ByNASA中文

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…

庆祝地球日

庆祝地球日

ByNASA中文

Former NASA Administrator Charlie Bolden speaks with local students during an Earth Day event, Thursday, April 20, 2023, at Union Station in Washington. The agency’s Earth Day exhibits are a free, public part of yearly celebrations; visitors can participate in hands-on activities and learn about the many ways NASA conducts Earth science. Image Credit: NASA/Keegan Barber 2023年4月20日，星期四，在华盛顿联合车站举行的地球日活动中，前NASA局长查理·博尔登与当地学生交谈。该机构的地球日展览是一个免费的、公共年度庆祝活动的一部分；参观者可以参与实践活动，了解NASA开展地球科学的多种方式。 图片来源: NASA/Keegan Barber

SuperBIT观测到碰撞的触须星系

SuperBIT观测到碰撞的触须星系

ByNASA中文

This view of the Antennae Galaxies, two large galaxies colliding 60 million light-years away, is one of the first research images from the Super Pressure Balloon Imaging Telescope (SuperBIT) that launched on a scientific super pressure balloon April 16, 2023 (local time New Zealand). This image and one of the Tarantula Nebula were captured as the balloon-borne telescope floated at 108,000 feet (approximately 20.5 miles or 33 km) above Earth’s surface, allowing scientists to view these scientific targets from a balloon platform in a near-space environment. The SuperBIT telescope captures images of galaxies in the visible-to-near ultraviolet light spectrum, which is within the Hubble Space Telescope’s capabilities, but with a wider field of view. SuperBIT’s goal is to map dark matter around galaxy clusters by…

机智号的火星里程碑

机智号的火星里程碑

ByNASA中文

This April 16, 2023, enhanced color image of NASA’s Ingenuity Mars Helicopter is the clearest view of the rotorcraft since its first flight. Ingenuity completed its 50th flight on April 13, 2023; the helicopter’s first flight on Mars was two years ago on April 19, 2021. This picture was taken by the Mastcam-Z instrument aboard the Perseverance rover. At the time the image was taken, the rover was about 75 feet (23 meters) away. Image Credit: NASA/JPL-Caltech/ASU/MSSS 这张摄于2023年4月16日的NASA机智号火星直升机增强彩色图像，是自该旋翼飞行器首次飞行以来最清晰的图像。机智号于2023年4月13日完成了第50次飞行；这架直升机首次在火星上飞行是在两年前的2021年4月19日。 这张照片是由毅力号火星车上的Mastcam-Z仪器拍摄。在拍摄这张照片的时候，探测器离它大约75英尺（23米）远。 影像来源：NASA/JPL-Caltech/ASU/MSSS

尼泊尔的喜马拉雅山和珠穆朗玛峰

尼泊尔的喜马拉雅山和珠穆朗玛峰

ByNASA中文

Clouds gather over Nepal near Mount Everest (center) in this April 13, 2023, photograph from the International Space Station. This image was taken as the station orbited 263 miles above the Indian subcontinent. In addition to photography, instruments on the space station like the Compact Ocean Wind Vector Radiometer and the Temporal Experiment for Storms and Tropical Systems allow us to monitor weather and collect important data. Image Credit: NASA 2023年4月13日，国际空间站拍摄的照片中，尼泊尔珠穆朗玛峰（中）附近的云层聚集在一起。这张照片是空间站在印度次大陆上空263英里的轨道上拍摄。 除了摄影之外，空间站上的仪器，如紧凑型海洋风矢量辐射计和风暴和热带系统时间实验，使我们能够监测天气并收集重要数据。 影像来源：NASA