超级巨星大犬座

超级巨星大犬座

ByNASA中文

This artist’s impression of hypergiant star VY Canis Majoris shows the star’s vast convection cells and violent ejections. VY Canis Majoris is so large that if it replaced the Sun, the star would extend for hundreds of millions of miles, between the orbits of Jupiter and Saturn. Image Credit: NASA, ESA, and R. Humphreys (University of Minnesota), and J. Olmsted (STScI) 这幅艺术家对超巨星大犬星座的印象展示了该恒星巨大的对流胞和猛烈的喷射。大犬星座是如此之大，如果它取代了太阳，这颗恒星将在木星和土星的轨道之间延伸数亿英里。 图片来源：NASA, ESA, R. Humphreys(明尼苏达大学)和J. Olmsted (STScI)

哈勃望远镜：30年，还在继续

哈勃望远镜：30年，还在继续

ByNASA中文

It’s March 2021 and in about another month the Hubble Space Telescope will celebrate 31 years in space observing the universe. In this image celebrating Hubble’s 30th birthday, the giant red nebula (NGC 2014) and its smaller blue neighbor (NGC 2020) are part of a vast star-forming region in the Large Magellanic Cloud, a satellite galaxy of the Milky Way, located 163,000 light-years away. The image is nicknamed the “Cosmic Reef,” because NGC 2014 resembles part of a coral reef floating in a vast sea of stars. Some of the stars in NGC 2014 are monsters. The nebula’s sparkling centerpiece is a grouping of bright, hefty stars, each 10 to 20 times more massive than our Sun. The seemingly isolated blue nebula at lower left…

美国宇航局和梅里特岛野生动物保护区

美国宇航局和梅里特岛野生动物保护区

ByNASA中文

Did you know that NASA’s Kennedy Space Center shares its home with the Merritt Island National Wildlife Refuge? In this image from 2014, a great egret strikes a classic pose amid the brush on Kennedy Space Center in Florida. The undeveloped property on Kennedy is managed by the U.S. Fish and Wildlife Service through the Merritt Island National Wildlife Refuge. The refuge provides a habitat for a plethora of wildlife, including 330 species of birds. For information on the refuge, visit http://www.fws.gov/merrittisland/Index.html. #WorldWildlifeDay Image Credit: NASA/Daniel Casper 你知道美国宇航局的肯尼迪航天中心和梅里特岛国家野生动物保护区共用一个家吗? 在这张2014年的照片中，大白鹭在佛罗里达州肯尼迪航天中心的灌木丛中摆出经典姿势。肯尼迪岛的这块未开发地产由美国鱼类和野生动物管理局通过梅里特岛国家野生动物保护区管理。该保护区为包括330种鸟类在内的大量野生动物提供了栖息地。有关保护区的信息，请访问http://www.fws.gov/merrittisland/Index.html。 #WorldWildlifeDay 图片来源:美国宇航局/丹尼尔·卡斯帕

凯利·拉蒂默：德莱顿大学的第一位女性研究试飞员

凯利·拉蒂默：德莱顿大学的第一位女性研究试飞员

ByNASA中文

Kelly J. Latimer was a research pilot in the Flight Crew Branch of NASA’s Dryden (now Armstrong) Flight Research Center from March through November 2007 and flew the T38, T-34, G-III, C-17, and the Ikhana/Predator B. Latimer was the center’s first female research test pilot. Prior to joining NASA, Latimer was on active duty with the U.S. Air Force. She accumulated more than 5,000 hours of military and civilian flight experience in 30 aircraft. Image Credit: NASA/Tony Landis 2007年3月至11月，凯利·j·拉蒂默(Kelly J. Latimer)是美国国家航空航天局德莱登(现阿姆斯特朗)飞行研究中心机组人员部门的一名研究飞行员，曾驾驶过T38、T-34、G-III、C-17和伊卡那/掠夺者B号飞机。 拉蒂默是该中心第一位女性研究试飞员。在加入NASA之前，拉蒂默在美国空军服役。她在30架飞机上积累了超过5000小时的军用和民用飞行经验。 图片来源:美国国家航空航天局/托尼·兰迪斯

玛丽·W·杰克逊NASA总部标志安装

玛丽·W·杰克逊NASA总部标志安装

ByNASA中文

On Thursday, Feb. 25, 2021, the Mary W. Jackson NASA Headquarters sign is installed ahead of the building naming ceremony, which took place the following day at NASA Headquarters in Washington. Mary W. Jackson, the first African American female engineer at NASA, began her career with the agency in the segregated West Area Computing Unit of NASA’s Langley Research Center in Hampton, Virginia. The mathematician and aerospace engineer went on to lead programs influencing the hiring and promotion of women in NASA’s science, technology, engineering, and mathematics careers. In 2019, she posthumously received the Congressional Gold Medal. Image Credit: NASA/Joel Kowsky 2021年2月25日，星期四，玛丽·W·杰克逊（Mary W. Jackson）美国宇航局总部标志在第二天在华盛顿的美国宇航局总部举行的建筑物命名仪式之前安装。玛丽·W·杰克逊NASA第一位非裔女性工程师，她的职业生涯始于NASA位于弗吉尼亚州汉普顿的兰利研究中心(Langley Research Center)的西部地区计算机部门。这位数学家和航空航天工程师继续领导影响NASA在科学、技术、工程和数学职业中聘用和晋升女性的项目。在2019年，她死后获得了国会金牌。 图片来源：NASA/乔尔·科斯基（Joel Kowsky）

来自黑洞的反射

来自黑洞的反射

ByNASA中文

This 2003 composite X-ray (blue and green) and optical (red) image of the active galaxy, NGC 1068, shows gas blowing away in a high-speed wind from the vicinity of a central supermassive black hole. Regions of intense star formation in the inner spiral arms of the galaxy are highlighted by both optical and X-ray emission. The elongated shape of the gas cloud is thought to be due to the funneling effect of a torus, or doughnut-shaped cloud, of cool gas and dust that surrounds the black hole. The torus, which appears as the elongated white spot in the accompanying 3-color X-ray images, has a mass of about 5 million Suns. Radio observations indicate that the torus extends from within a few light years of the…

穿越火星的耶泽罗陨石坑

穿越火星的耶泽罗陨石坑

ByNASA中文

This image depicts a possible area through which the Perseverance Mars rover could traverse across Jezero Crater as it investigates several ancient environments that may have once been habitable. The route begins at the cliffs defining the base of a delta produced by a river as it flowed into a lake that once filled the crater. The path then traverses up and across the delta toward possible ancient shoreline deposits, and then climbs the 2,000-foot-high (610-meter-high) crater rim to explore the surrounding plains. About half of this traverse could be completed in Perseverance’s prime mission (one Mars year, or two Earth years). For reference, the prominent crater near the center of the image is about 0.6 miles (1 kilometer) across. Scientists believe the area was…

毅力号拍摄的第一张火星全彩照片

毅力号拍摄的第一张火星全彩照片

ByNASA中文

This is the first high-resolution, color image to be sent back by the Hazard Cameras on the underside of NASA’s Perseverance Mars rover after its landing on Feb. 18, 2021. Video from landing chronicles major milestones during the final minutes of its entry, descent, and landing on the Red Planet, as the spacecraft plummeted, parachuted, and rocketed toward the surface of Mars. A microphone on the rover also has provided the first audio recording of sounds from Mars. From the moment of parachute inflation, the camera system covers the entirety of the descent process, showing some of the rover’s intense ride to Mars’ Jezero Crater. The footage from high-definition cameras aboard the spacecraft starts 7 miles (11 kilometers) above the surface, showing the supersonic deployment…

阿尔文·德鲁：脚踏实地

阿尔文·德鲁：脚踏实地

ByNASA中文

In this image taken on Feb. 28, 2011, NASA astronaut Alvin Drew participates in the STS-133 mission’s first spacewalk as construction and maintenance continue on the International Space Station. During the six-hour, 34-minute spacewalk, Drew and NASA astronaut Steve Bowen (out of frame) installed the J612 power extension cable, moved a failed ammonia pump module to the External Stowage Platform 2 on the Quest Airlock for return to Earth at a later date, installed a camera wedge on the right hand truss segment, installed extensions to the mobile transporter rail and exposed the Japanese “Message in a Bottle” experiment to space. Drew flew on two space shuttle missions, STS-118 (Aug. 8 -21, 2007) and STS-133 (Feb. 24 – March 9, 2011). STS-118 was the 119th…