描绘太阳系的小行星带

描绘太阳系的小行星带

ByNASA中文

Today(Editor’s Note: June 30) is International Asteroid Day! Asteroids, sometimes called minor planets, are rocky remnants left over from the early formation of our solar system about 4.6 billion years ago. The current known asteroid count is more than one million! Most of this ancient space rubble can be found orbiting our Sun between Mars and Jupiter within the main asteroid belt. Asteroids range in size from Vesta – the largest at about 329 miles (530 kilometers) in diameter – to bodies that are less than 33 feet (10 meters) across. The total mass of all the asteroids combined is less than that of Earth’s Moon. This image is an artist’s illustration of our solar system’s asteroid belt. Learn more about asteroids. Image Credit: NASA/McREL…

更安静的超音速飞机的可视化影像

更安静的超音速飞机的可视化影像

ByNASA中文

NASA’s X-59 Quiet SuperSonic Technology X-plane is designed to fly faster than the speed of sound without producing sonic booms – those loud, startling noises which can be disruptive to humans and animals. Currently, commercial aircraft aren’t allowed to fly faster than the speed of sound over land because of the objectionable sonic booms they cause for those on the ground. This experimental plane will fly at a cruise speed roughly double that of a commercial jet while keeping aircraft noise down to a quiet “sonic thump” – or even no sound at all – as heard on the ground when the plane flies overhead at supersonic speeds. To be sure the X-59’s design will perform within expected noise limits, NASA is working closely with…

空间站飞越太阳

空间站飞越太阳

ByNASA中文

This composite image made from seven frames shows the International Space Station, with a crew of seven onboard, in silhouette as it transits the Sun at roughly five miles per second, Friday, June 25, 2021, from near Nellysford, Va. Onboard are Expedition 65 NASA astronauts Megan McArthur, Mark Vande Hei, Shane Kimbrough, ESA (European Space Agency) astronaut Thomas Pesquet, Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide, and Roscosmos cosmonauts Pyotr Dubrov and Oleg Novitskiy. At the time of the transit, Kimbrough and Pesquet were working outside on the station’s port 6 truss to install the second Roll-Out Solar Array (iROSA) on the 4B power channel. Image Credit: NASA/Joel Kowsky 这张由七帧组成的合成图像显示了国际空间站的轮廓，船上有七名机组人员，它于2021年6月25日星期五从弗吉尼亚州奈利斯福德附近以大约每秒5英里的速度穿越太阳。空间站上有第65号远征队NASA宇航员梅根·麦克阿瑟、马克·范德·黑、肖恩·金布罗，ESA(欧洲航天局)宇航员托马斯·佩克特，日本宇宙航空研究开发机构(JAXA)宇航员星出彰彦，俄罗斯航天局宇航员彼得·杜布罗夫和奥列格·诺维茨基。在穿越太阳的时候，金布罗和佩克特正在空间站的6号端口桁架外面工作，在4B电源通道上安装第二个展开式太阳能阵列(iROSA)。 图片来源:NASA/Joel Kowsky

哈勃望远镜拍摄的令人眼花缭乱的动态二人组

哈勃望远镜拍摄的令人眼花缭乱的动态二人组

ByNASA中文

A cataclysmic cosmic collision takes center stage in this image taken with the NASA/ESA Hubble Space Telescope. The image features the interacting galaxy pair IC 1623, which lies around 275 million light-years away in the constellation Cetus (the Whale). The two galaxies are in the final stages of merging, and astronomers expect a powerful inflow of gas to ignite a frenzied burst of star formation in the resulting compact starburst galaxy. This interacting pair of galaxies is a familiar sight; Hubble captured IC 1623 in 2008 using two filters at optical and infrared wavelengths on the Advanced Camera for Surveys. This image incorporates data from Wide Field Camera 3, and combines observations taken in eight filters spanning infrared to ultraviolet wavelengths to reveal the finer…

从空间站看地球

从空间站看地球

ByNASA中文

In this June 2021 image, our Sun’s glint beams off the Indian Ocean as the International Space Station orbited about 270 miles above the Earth near western Australia. The station orbits the Earth about every 90 minutes at a speed of more than 17,000 miles per hour. Image Credit: NASA 在这张2021年6月拍摄的照片中，国际空间站在靠近澳大利亚西部的地球上空约270英里处环绕运行，太阳的光芒在印度洋上方闪耀。空间站每90分钟以超过17000英里每小时的速度绕地球运行一圈。 图片来源:美国国家航空航天局

NASA和ESA宇航员继续安装空间站太阳能阵列

NASA和ESA宇航员继续安装空间站太阳能阵列

ByNASA中文

Spacewalkers Shane Kimbrough of NASA (left) and Thomas Pesquet of the European Space Agency worked to install new roll out solar arrays on the International Space Station’s P-6 truss structure. This latest spacewalk took place on Sunday, June 20, 2021. During the eighth spacewalk of the year, the pair completed the deployment of a new ISS Roll-Out Solar Array, or iROSA, on the far end of the left (port) side of the station’s P6 backbone truss structure. Image Credit: NASA NASA的太空行走者谢恩·金布罗(Shane Kimbrough，左)和欧洲航天局的托马斯·佩斯凯(Thomas Pesquet)正在为国际空间站的P-6桁架结构安装新的太阳能阵列。最近一次太空行走发生在2021年6月20日星期日。 在今年的第8次太空行走中，这对搭档完成了在空间站P6骨干桁架结构左(左)端的新的国际空间站推出太阳能阵列(iROSA)的部署。 图片来源:美国国家航空航天局

肖恩·金布罗在空间站上帮忙安装太阳能阵列

肖恩·金布罗在空间站上帮忙安装太阳能阵列

ByNASA中文

NASA Expedition 65 astronaut Shane Kimbrough is pictured during the Friday, June 18, 2021, spacewalk to install new roll out solar arrays on the International Space Station’s P-6 truss structure. Image Credit: NASA 2021年6月18日星期五，NASA第65号远征队宇航员肖恩·金布罗在太空行走，为国际空间站的P-6桁架结构安装新的太阳能阵列。 图片来源:NASA

从太空看加尔维斯顿

从太空看加尔维斯顿

ByNASA中文

On Monday, June 19, 1865, enslaved African Americans in Texas learned of their freedom. That day of liberation became known as Juneteenth, when the Emancipation Proclamation was announced by Union troops in Galveston, Texas. On Thursday, June 17, 2021, President Joe Biden signed into law legislation making Juneteenth, “a federal holiday, recognizing that (1) history should be regarded as a means for understanding the past and solving the challenges of the future; and (2) the celebration of the end of slavery is an important and enriching part of the history and heritage of the United States,” said NASA Administrator Bill Nelson. This nighttime image, taken by the Expedition 36 crew aboard the International Space Station in 2013, shows most of the metropolitan areas of Texas,…

湍流的新研究

湍流的新研究

ByNASA中文

In a series of flights between June 1-6, 2021, Stratodynamics Inc. launched its HiDRON stratospheric glider from a high-altitude balloon at Spaceport America in New Mexico. HiDRON carried technology supported by NASA’s Flight Opportunities program for the first time. The uncrewed HiDRON stratospheric glider from Stratodynamics is designed to release from a sounding balloon at near-space altitude, enabling a controlled descent for technology payloads aboard. The glider also achieves higher velocity than a balloon flight alone – one of the reasons NASA-supported researchers from the University of Kentucky chose Stratodynamics as the flight provider for testing of turbulence detection instruments. According to the Federal Aviation Administration: “Clear air turbulence is air movement created by atmospheric pressure, jet streams, air around mountains, cold or warm weather…

一名目的明确的乘客准备在猎户座飞船上执行任务

一名目的明确的乘客准备在猎户座飞船上执行任务

ByNASA中文

When NASA’s Orion spacecraft launches aboard the powerful Space Launch System rocket for the spacecraft’s first mission around the Moon later this year, a suited manikin will be aboard outfitted with sensors to provide data on what crew members may experience in flight. As part of the uncrewed Artemis I flight test, NASA is seeking to learn how best to protect astronauts for Artemis II, the first mission with crew. In this image, engineers use a suited manikin that will fly on Artemis I to conduct vibration testing at Kennedy Space Center on Orion’s seat and energy dampening system – called the Crew Impact Attenuation System – for qualification ahead of Artemis II. The manikin flying on Artemis I will occupy the commander’s seat inside…