空间站之夜

空间站之夜

ByNASA中文

Night aboard the International Space Station can seemingly look like every spooky sci-fi movie you’ve ever seen. This image shows two empty spacesuits seemingly colluding as most of the astronauts slept. This is one of several images snapped by European Space Agency astronaut Alexander Gerst during his first stay on the orbital laboratory in 2014. During his second stay, he served as Space Station Commander. He has spent nearly a year in space, having served two tours on the station. Image Credit: Alexander Gerst/ESA 在国际空间站上的夜晚看似您所看过的每部怪异的科幻电影。此图显示了两个空的宇航服，它们似乎在大多数宇航员睡觉时缠绕在一起。 这是欧洲航天局宇航员亚历山大·格斯特（Alexander Gerst）在2014年首次留在轨道实验室时拍摄的几张照片之一。在他第二次逗留期间，他曾担任空间站指挥官。他已经在太空待了将近一年，在空间站服役了两次。 图片来源：Alexander Gerst/ESA

我们的万圣节太阳

我们的万圣节太阳

ByNASA中文

Active regions on the sun combined to look something like a jack-o-lantern’s face on Oct. 8, 2014. The active regions appear brighter because those are areas that emit more light and energy — markers of an intense and complex set of magnetic fields hovering in the sun’s atmosphere, the corona. This image blends together two sets of wavelengths at 171 and 193 angstroms, typically colorized in gold and yellow, to create a particularly Halloween-like appearance. This image is a blend of 171 and 193 angstrom light as captured by the Solar Dynamics Observatory. Image Credit: NASA/GSFC/SDO 2014年10月8日，太阳上的活跃区域组合在一起看起来像一个南瓜灯的脸。活动区域显得更亮，因为它们是发出更多光和能量的区域-强烈而复杂的一组磁场的标志盘旋在太阳的大气层—日冕中。这张照片将两组波长分别为171埃和193埃的光线混合在一起，颜色通常为金色和黄色，营造出一种特别万圣节的氛围。 这张照片是由太阳动力学观测台拍摄的171埃和193埃的光线混合而成。 图片来源: NASA/GSFC/SDO

“精灵”在木星的大气中嬉戏

“精灵”在木星的大气中嬉戏

ByNASA中文

This illustration shows the lightning phenomenon known as a sprite and what a sprite could look like in Jupiter’s atmosphere. Named after a mischievous, quick-witted character in English folklore, sprites last for only a few milliseconds. They feature a central blob of light with long tendrils of light extending down toward the ground and upward. In Earth’s upper atmosphere, their interaction with nitrogen give sprites a reddish hue. At Jupiter, where the predominance of hydrogen in the upper atmosphere would likely give them a blue hue. Image Credit: NASA/JPL-Caltech/SwRI 这幅插图展示了被称为精灵的闪电现象，以及精灵在木星大气中的样子。精灵的名字来源于英国民间传说中一个调皮伶俐的角色，它的寿命只有几毫秒。他们的特点是一个中心斑点的光与长长的卷须的光向下延伸到地面和向上。在地球的高层大气中，它们与氮的相互作用使精灵呈现出红色。在木星上，氢在上层大气中占主导地位，可能会使它们呈现出蓝色。 图片来源: NASA/JPL-Caltech/SwRI

美国宇航局宇航员凯特·鲁宾斯在太空中投票

美国宇航局宇航员凯特·鲁宾斯在太空中投票

ByNASA中文

NASA astronaut Kate Rubins points to the International Space Station’s “voting booth” where she cast her vote from space this month. This is actually Rubins’ second time to vote from low-Earth orbit, having cast her first vote from space in 2016 when she was an Expedition 48-49 crew member. Voting in space has been possible since 1997 when a bill passed to legally allow voting from space in Texas. Since then, several NASA astronauts have exercised this civic duty from orbit. Learn more about how astronauts cast their vote from orbit: https://www.nasa.gov/feature/astronauts-to-vote-in-space. Image Credit: NASA 美国宇航局宇航员凯特·鲁宾斯指着国际空间站的“投票亭”，她本月在太空中投票。这实际上是鲁宾斯第二次在近地轨道上投票，她第一次在太空投票是在2016年，当时她是第48-49远征队的成员。 自从1997年一项允许在德克萨斯州进行太空投票的法案通过以来，太空投票就成为可能。从那时起，美国宇航局的几名宇航员就在轨道上履行了这项公民义务。了解更多关于宇航员如何在轨道上投票的信息:https://www.nasa.gov/feature/astronauts-to vote-in-space。 图片来源：NASA

杰泽罗火山口是火星远古时代的一个湖泊

杰泽罗火山口是火星远古时代的一个湖泊

ByNASA中文

This illustration shows Jezero Crater — the landing site of the Mars 2020 Perseverance rover — as it may have looked billions of years go on Mars, when it was a lake. An inlet and outlet are also visible on either side of the lake. A key objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover will characterize the planet’s geology and past climate, pave the way for human exploration of the Red Planet, and be the first mission to collect and cache Martian rock and regolith (broken rock and dust). Subsequent missions, currently under consideration by NASA in cooperation with the European Space Agency, would send spacecraft to Mars to collect these cached samples…

哈勃看到了银河瀑布

哈勃看到了银河瀑布

ByNASA中文

In this spectacular image captured by the NASA/ESA Hubble Space Telescope, the galaxy NGC 2799 (on the left) is seemingly being pulled into the center of the galaxy NGC 2798 (on the right). Interacting galaxies, such as these, are so named because of the influence they have on each other, which may eventually result in a merger or a unique formation. Already, these two galaxies have seemingly formed a sideways waterspout, with stars from NGC 2799 appearing to fall into NGC 2798 almost like drops of water. Galactic mergers can take place over several hundred million to over a billion years. While one might think the merger of two galaxies would be catastrophic for the stellar systems within, the sheer amount of space between stars…

研究飞机噪声

研究飞机噪声

ByNASA中文

An array of 960 microphones is seen here off the end of runway 11 at Boeing’s research facility near Glasgow, Montana. The microphones were used by NASA to record the sound of a low-flying 787-10 Dreamliner passing overhead as part of the Chicago-based company’s 2020 ecoDemonstrator program during late August and early September. NASA researchers are studying how aircraft noise changes based on the interaction and placement of an airliner’s jet engines in relation to the main airframe and wing. Another 214 microphones were wired to the exterior of the 787 to aid in the studies. The data will be used to help design future airliners be quieter. Image Credit: Boeing/Text: Jim Banke 在蒙大拿州格拉斯哥附近的波音研究中心，从11号跑道的尽头可以看到由960个麦克风组成的阵列。8月底和9月初， NASA使用这些麦克风来记录低空飞行的波音787-10梦幻客机从高空经过的声音，这是总部位于芝加哥的波音公司2020年生态演示计划的一部分。NASA的研究人员正在研究飞机噪音如何根据客机喷气发动机相对于机身和机翼的相互作用和位置而变化。另外214个麦克风被连接到787的外部，以帮助研究。该数据将用于帮助设计未来的客机，使其更安静。 图片来源:波音公司/文本:吉姆·班克

降落在小行星贝努上

降落在小行星贝努上

ByNASA中文

Bennu, a well-preserved, ancient asteroid, is currently more than 200 million miles (321 million kilometers) from Earth and offers scientists a window into the early solar system as it was first taking shape billions of years ago and flinging ingredients that could have helped seed life on Earth. On Tuesday, Oct. 20, 2020, NASA’s OSIRIS-REx sample collection mission performed a successful “Touch-And-Go” (TAG) maneuver. At 1:50 p.m. EDT, OSIRIS-REx fired its thrusters to nudge itself out of orbit around Bennu. It extended the shoulder, then elbow, then wrist of its 11-foot (3.35-meter) sampling arm, known as the Touch-And-Go Sample Acquisition Mechanism (TAGSAM), and transited across Bennu while descending about a half-mile (805 meters) toward the surface. After a four-hour descent, at an altitude of approximately…

中子星在苏醒中创造出黄金和白金

中子星在苏醒中创造出黄金和白金

ByNASA中文

This illustration shows the hot, dense, expanding cloud of debris stripped from neutron stars just before they collided. This cloud produces a kilonova; that is an astronomical event that occurs when two neutron stars or a neutron star and a black hole merge into each other. This cloud shows the visible and infrared light. Within this neutron-rich debris, large quantities of some of the universe’s heaviest elements were forged, including hundreds of Earth masses of gold and platinum. Image Credit: NASA’s Goddard Space Flight Center/CI Lab 该图显示了中子星碰撞之前就从中子星上剥离下来的炽热、密集、膨胀的碎片云。这朵云产生了千新星；当两个中子星或一个中子星和一个黑洞相互融合时，就会发生天文学事件。此云显示可见光和红外光。在这些富含中子的碎片中，形成了大量的宇宙中最重的元素，包括数百个地球质量的金和铂。 影像来源：NASA’s Goddard Space Flight Center/CI Lab

猎户座飞船最近安装的太阳能电池阵列机翼

猎户座飞船最近安装的太阳能电池阵列机翼

ByNASA中文

Two of Orion’s four recently installed solar array wings are exposed and surrounded by the panels that will protect it during launch and ascent. Three spacecraft adapter jettison fairings are being prepared for installation and will be moved into place by technicians with Lockheed Martin, lead contractor for Orion. They will be secured around the spacecraft, encapsulating the European Service Module to protect it from the harsh environment as the spacecraft is propelled out of Earth’s atmosphere atop the Space Launch System (SLS) rocket during NASA’s Artemis I mission. The next time the solar array wings will be visible will be when Orion is in space. Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the…