NASA·每日一图 | Page 88 of 146

阿尔忒弥斯1号航天发射系统核心级提升和对接

ByNASA中文 2021年6月16日2021年6月16日

Teams with NASA’s Exploration Ground Systems and contractor Jacobs lower the Space Launch System (SLS) core stage – the largest part of the rocket – onto the mobile launcher, in between the twin solid rocket boosters, inside High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on June 12, 2021. The 188,000-pound core stage, with its four RS-25 engines, will provide more than 2 million pounds of thrust during launch and ascent, and coupled with the boosters, will provide more than 8.8 million pounds of thrust to send the Artemis I mission to space. Under the Artemis program, NASA will land the first woman and first person of color on the Moon, as well as establish a sustainable presence…

NASA·每日一图

2021年国旗日：向美国国旗致敬

ByNASA中文 2021年6月16日2021年6月16日

June 14 of each year is celebrated as Flag Day in the U.S. According to the Library of Congress’s online site, “on May 30, 1916, President Woodrow Wilson issued a presidential proclamation establishing a national Flag Day on June 14. The day commemorates the adoption of the Stars and Stripes as the official flag of the United States.” All NASA spacecraft include a United States flag. Through the decades, our nation’s flag has been placed on the Moon, headed into interstellar space, accompanied rovers on Mars, and been featured on spacesuits. In this iconic image, Mission Commander John Young salutes the flag while jumping! The Apollo 16 Lunar Module Orion and the Lunar Roving Vehicle are in the background. Feature: Flag Day – Flying High:…

NASA·每日一图

地球的大气辉光和星迹

ByNASA中文 2021年6月12日2021年6月12日

The beauty of our home planet is shown in this long exposure photograph. Taken from the International Space Station as it orbited 267 miles above the Indian Ocean, it reveals Earth’s atmospheric glow and star trails. Image Credit: NASA 这张长时间曝光的照片展示了我们星球的美丽。这张照片是由国际空间站在印度洋上空267英里的轨道上拍摄的，它显示了地球的大气辉光和星迹。图片来源:美国国家航空航天局

NASA·每日一图

日偏食

ByNASA中文 2021年6月11日2021年6月11日

A partial solar eclipse is seen as the Sun rises behind the United States Capitol Building, Thursday, June 10, 2021, as seen from Arlington, Virginia. The annular or “ring of fire” solar eclipse is only completely visible in Greenland, Northern Russia, and Canada. Image Credit: NASA/Bill Ingalls 2021年6月10日，星期四，在弗吉尼亚州的阿灵顿，太阳从美国国会大厦后面升起，图为日偏食。只有在格陵兰岛、俄罗斯北部和加拿大才能完全看到这种环形或“火环”日食。图片来源:NASA/Bill Ingalls

NASA·每日一图

银河炖牛肉

ByNASA中文 2021年6月10日2021年6月10日

One definition for goulash, according to the Merriam-Webster dictionary, is a mixture of heterogeneous elements, or jumble. This 2017 image of galaxy Arp 299 is just that. Arp 299 is a system located about 140 million light-years from Earth, containing two galaxies that are merging, which has created a partially blended mix of stars from each galaxy. Data from the Chandra X-Ray Observatory reveals 25 bright X-ray sources sprinkled throughout the Arp 299 concoction. Fourteen of these sources are such strong emitters of X-rays that astronomers categorize them as “ultra-luminous X-ray sources,” or ULXs. This composite image of Arp 299 contains X-ray data from Chandra (pink), higher-energy X-ray data from NuSTAR (purple), and optical data from the Hubble Space Telescope (white and faint brown). Arp…

NASA·每日一图

地球是一个水世界

ByNASA中文 2021年6月9日

In this view from aboard the SpaceX Crew Dragon Endeavour, a pair of the International Space Station’s main solar arrays seemingly drape across the Earth’s horizon as the orbital lab soars 271 miles above the south Atlantic in between Argentina and South Africa. Earth is a pale, blue dot when seen from space because our home planet is 71 percent water. NASA monitors Earth’s water from space, the skies, ground stations on land, ships sailing the seas and even with apps on mobile phones. While Earth is so wet it looks blue from space, most of that water is saltwater. Less than three percent of Earth’s water is fresh water and nearly all of that water is frozen – locked up in polar ice caps,…

NASA·每日一图

在空间站研究免疫反应

ByNASA中文 2021年6月8日2021年6月8日

NASA astronaut Mark Vande Hei works on Celestial Immunity, an investigation of how gravity affects immune response, potentially supporting development of new vaccines and drugs to prevent and treat existing and emerging human diseases. Celestial Immunity evaluates the effects of gravity on functional immune response and the role of age in regulating immune pathways, using cells from elderly and younger adult donors. It builds on earlier space station studies that evaluated the function of white blood cells, extending the observation period from hours to days and expanding the analysis to an array of activated immune pathways. Gravity, convection, and buoyancy interfere with cell behavior in laboratory-based studies on Earth, but microgravity eliminates these factors. Results could support development of new vaccines and drugs to prevent…

NASA·每日一图

探测来自天王星的X射线

ByNASA中文 2021年6月5日2021年6月5日

Astronomers have detected X-rays from Uranus for the first time, using NASA’s Chandra X-ray Observatory, as shown in this image from March 2021. This result may help scientists learn more about this enigmatic ice giant planet in our solar system. Uranus is the seventh planet from the Sun and has two sets of rings around its equator. The planet, which has four times the diameter of Earth, rotates on its side, making it different from all other planets in the solar system. Since Voyager 2 was the only spacecraft to ever fly by Uranus, astronomers currently rely on telescopes much closer to Earth, like Chandra and the Hubble Space Telescope, to learn about this distant and cold planet that is made up almost entirely of…

NASA·每日一图

比尔·纳尔逊局长发表了他的第一次NASA演讲

ByNASA中文 2021年6月4日2021年6月4日

NASA Administrator Bill Nelson talks to the agency’s workforce during his first State of NASA event Wednesday, June 2, 2021, at NASA Headquarters Mary W. Jackson Building in Washington. Nelson remarked on his long history with NASA, and among other topics, discussed the agency’s plans for future Earth-focused missions to address climate change and a robotic and human return to the Moon through the Artemis program, as well as announcing two new planetary science missions to Venus – VERITAS and DAVINCI+. Image Credit: NASA/Bill Ingalls 美国国家航空航天局（NASA）局长比尔·纳尔逊（Bill Nelson）于2021年6月2日星期三在华盛顿的NASA总部玛丽·W·杰克逊大楼举行了他的第一次NASA演讲。纳尔逊谈到了他在美国宇航局的悠久历史，除其他话题外，还讨论了该机构未来以地球为重点的任务计划，以解决气候变化问题，以及通过阿尔忒弥斯计划让机器人和人类重返月球，并宣布了两项新的金星行星科学任务——VERITAS和DAVINCI+。图片来源:NASA/Bill Ingalls

NASA·每日一图

NASA数字战略家安德烈斯·阿尔梅达 (Andres Almeida)

ByNASA中文 2021年6月4日2021年6月4日

When NASA digital strategist Andres Almeida joined Twitter in 2009, one of the first accounts he followed was NASA. “I knew they were doing NASA ‘Tweetups’ (now called Socials) where members of the public could apply, go behind the scenes of a NASA facility and potentially attend a launch. “I was selected for the STS-135 Tweetup — the final launch of the space shuttle, July 2011. The Tweetup gave me access that I never in my life thought I’d be able to experience. Being inside the Vehicle Assembly Building, where Saturn rockets were assembled, where the space shuttle was stacked and now where the SLS is going to be stacked… that for me, was incredible. “We got to Kennedy for the launch on July 7….