螺旋星系横跨太空

螺旋星系横跨太空

ByNASA中文

This Jan. 10, 2013, composite image of the giant barred spiral galaxy NGC 6872 combines visible light images from the European Southern Observatory’s Very Large Telescope with far-ultraviolet data from NASA’s Galaxy Evolution Explorer (GALEX) and infrared data acquired by NASA’s Spitzer Space Telescope. NGC 6872 is 522,000 light-years across, making it more than five times the size of the Milky Way galaxy; in 2013, astronomers from the United States, Chile, and Brazil found it to be the largest-known spiral galaxy, based on archival data from GALEX. Image Credit: NASA/ESO/JPL-Caltech/DSS 2013年1月10日，这张巨型棒状螺旋星系NGC 6872的合成图像结合了欧洲南方天文台超大型望远镜的可见光图像、NASA星系演化探测器（GALEX）的远紫外数据和NASA斯皮策太空望远镜的红外数据。NG C6872的直径为522,000光年，是银河系的五倍多；2013年，根据GALEX的档案数据，美国、智利和巴西的天文学家发现它是已知最大的螺旋星系。 影像来源：NASA/ESO/JPL-Caltech/DSS

宇航员看到的月球

宇航员看到的月球

ByNASA中文

The waxing gibbous Moon stands out in this Jan. 2, 2023, image from the International Space Station as it orbited 269 miles above the southern Indian Ocean. In 24 hours, the space station makes 16 orbits of Earth, traveling through 16 sunrises and sunsets. To find out where the ISS is now—or to get text or email alerts when it’s visible in your area—check out the Spot the Station site. Image Credit: NASA/Josh Cassada 2023年1月2日，国际空间站在南印度洋上空269英里的轨道上拍摄的渐圆的凸月。在24小时内，空间站将绕地球运行16圈，经历16次日出和日落。如欲了解国际空间站现在的位置，或在您所在地区可以看到国际空间站时收到短信或电子邮件提醒，请访问“发现国际空间站”网站。 影像来源：NASA/Josh Cassada

NASA肯尼迪航天中心的植物群和动物群

NASA肯尼迪航天中心的植物群和动物群

ByNASA中文

In this photo from Oct. 14, 2008, a great blue heron stands watch among a pond of water lilies on NASA’s Kennedy Space Center. It is one of 310 species of birds that inhabit the National Merritt Island Wildlife Refuge, which shares a boundary with Kennedy. The marshes and open water of the refuge also provide wintering areas for 23 species of migratory waterfowl, as well as a year-round home for great blue herons, great egrets, wood storks, cormorants, brown pelicans, and other species of marsh and shore birds. Kennedy is responsible for more protected species than any other federal property in the continental United States. Image Credit: NASA/Dimitri Gerondidakis 在这张来自2008年10月14日的照片中，一只大蓝鹭站在NASA肯尼迪航天中心的睡莲池中观望。它是栖息在国家梅里特岛野生动物保护区的310种鸟类之一，该保护区与肯尼迪接壤。该保护区的沼泽和开放水域还为23种迁徙水鸟提供了越冬区，也为大蓝鹭、大白鹭、木鹳、鸬鹚、褐鹈鹕以及其他沼泽和岸鸟提供了全年的栖息地。肯尼迪负责保护的物种比美国大陆任何其他联邦财产都多。 图片来源:NASA/Dimitri Gerondidakis

智利的火山羽流

智利的火山羽流

ByNASA中文

Chile’s Villarrica volcano emits steam and other volcanic gases in this photo taken from the International Space Station on Jan. 17, 2023. The gases come from a series of minor explosions—called Strombolian eruptions—that have been ongoing at Villarrica since October 2022. Located along Chile’s southern Andes, Villarrica is one of the most active and dangerous volcanoes in South America; it typically erupts every three to six years. Image Credit: NASA 2023年1月17日，在国际空间站拍摄的这张照片中，智利的维拉里卡火山喷出蒸汽和其他火山气体。这些气体来自一系列被称为斯特龙博利亚火山爆发的小型爆炸，自2022年10月以来一直在比利亚里卡持续发生。 比利亚里卡火山位于智利安第斯山脉南部，是南美洲最活跃、最危险的火山之一；它通常每三到六年爆发一次。 影像来源：NASA

哈勃观测到猎户座星云中的双星

哈勃观测到猎户座星云中的双星

ByNASA中文

The bright variable star V 372 Orionis takes center stage in this image from the NASA/ESA Hubble Space Telescope, which has also captured a smaller companion star in the upper left of this image. Both stars lie in the Orion Nebula, a colossal region of star formation roughly 1,450 light-years from Earth. V 372 Orionis is a particular type of variable star known as an Orion Variable. These young stars experience some tempestuous moods and growing pains, which are visible to astronomers as irregular variations in luminosity. Orion Variables are often associated with diffuse nebulae, and V 372 Orionis is no exception; the patchy gas and dust of the Orion Nebula pervade this scene. This image overlays data from two of Hubble’s instruments. Data from…

纪念日

纪念日

ByNASA中文

NASA Administrator Bill Nelson lays a wreath at the Space Shuttle Challenger Memorial during NASA’s Day of Remembrance, Thursday, Jan. 26, 2023, at Arlington National Cemetery in Arlington, Va. Wreaths were laid in memory of those men and women who lost their lives in the quest for space exploration. Credit: NASA/Aubrey Gemignani 2023年1月26日星期四，在弗吉尼亚州阿灵顿国家公墓举行的NASA纪念日期间，NASA局长比尔·纳尔逊在航天飞机挑战者纪念馆献上花圈。花圈是为了纪念那些在寻求太空探索中丧生的人。 影像来源：NASA/Aubrey Gemignani

里根总统呼吁建立空间站

里根总统呼吁建立空间站

ByNASA中文

On Jan. 25, 1984, President Ronald Reagan used his State of the Union address to call for NASA to build a permanent crewed space station. While Reagan’s speech took place in a broader sociopolitical context of generally heightened tensions with the Soviet Union, his remarks foreshadowed the international cooperation that has characterized the International Space Station. He called for NASA to invite other countries to participate “so we can strengthen peace, build prosperity, and expand freedom for all who share our goals.” Credit: National Archives and Records Administration 1984年1月25日，罗纳德·里根总统在他的国情咨文中呼吁NASA建立一个永久性的载人空间站。 虽然里根的演讲是在与苏联紧张关系普遍加剧更广泛的社会政治背景下进行，但他的演讲预示着国际空间站的国际合作。他呼吁NASA邀请其他国家参与，“这样我们就可以为所有与我们有共同目标的人加强和平，建设繁荣，扩大自由。” 影像来源：National Archives and Records Administration

韦伯揭开黑暗面

韦伯揭开黑暗面

ByNASA中文

An international team of astronomers using NASA’s James Webb Space Telescope has obtained an in-depth inventory of the deepest, coldest ices measured to date in a molecular cloud. In addition to simple ices like water, the team was able to identify frozen forms of a wide range of molecules, from carbonyl sulfide, ammonia, and methane, to the simplest complex organic molecule, methanol. This is the most comprehensive census to date of the icy ingredients available to make future generations of stars and planets, before they are heated during the formation of young stars. This image from the telescope’s Near-Infrared Camera (NIRCam) features the central region of the Chamaeleon I dark molecular cloud, which resides 630 light-years away. The cold, wispy cloud material (blue, center) is…

宇航员妮可·曼首次太空行走

宇航员妮可·曼首次太空行走

ByNASA中文

iss068e041215 (Jan. 20, 2023) — NASA astronaut and Expedition 68 Flight Engineer Nicole Mann is pictured in her Extravehicular Mobility Unit, or spacesuit, during her first spacewalk. She and fellow spacewalker Koichi Wakata (out of frame) of the Japan Aerospace Exploration Agency installed a modification kit on the International Space Station’s starboard truss structure that will enable the future installation of the orbiting lab’s next roll-out solar array. iss068e041215（2023年1月20日）——NASA宇航员兼第68号远征队飞行工程师妮可·曼在第一次太空行走时穿着舱外机动装置（或宇航服）。她和日本宇宙航空研究开发署的太空行走同伴若田光一（画面外）在国际空间站的右舷桁架结构上安装了一个改装套件，这将使未来能够安装轨道实验室的下一个展开式太阳能电池阵。

为他们的第一次太空行走做准备

为他们的第一次太空行走做准备

ByNASA中文

Expedition 68 Flight Engineers Nicole Mann of NASA and Koichi Wakata of the Japan Aerospace Exploration Agency are pictured on Jan. 12, 2023, during a fit check of their spacesuits inside the Quest airlock ahead of a planned spacewalk to upgrade the International Space Station’s power generation system. The spacewalk began on Jan. 20, 2023, at approximately 8:15 a.m. EST and was expected to last six and a half hours. Image Credit: NASA 2023年1月12日，NASA的第68号远征队飞行工程师妮可·曼和日本航空航天探索局的若田光一在计划进行太空行走以升级国际空间站的发电系统之前，在Quest气闸内检查他们的宇航服。 太空行走于2023年1月20日美国东部时间上午8点15分左右开始，预计将持续六个半小时。 图片来源：NASA