NASA·每日一图

Orson John started his career at NASA as a summer intern, continued as a NASA Pathways student, and began a career at NASA’s Goddard Space Flight Center as an engineer after college. He earned a Bachelor of Science degree in physics in 2010 from the New Mexico Institute of Mining & Technology and now works as a reliability engineer in the Reliability & Risk Assessment Branch performing failure mode, fault and risk analyses for NASA spacecraft and instruments. In this image, he is on the left and is preparing the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) for encapsulation in the United Launch Alliance Delta II payload fairing on Sept. 4, 2018, at Space Launch Complex 2 at Vandenberg Air Force Base in California. At…

When astronaut John Herrington made his voyage to space aboard Space Shuttle Endeavour’s STS-113 mission, he became the first Native American in space. An enrolled member of the Chickasaw Nation, Herrington carried its flag on his 13-day trip to space, as well as several personal items with him. Among those items was this traditional flute. Born in Wetumka, Oklahoma, into the Chickasaw Nation, Herrington built his career on service. He received his commission from Aviation Officer Candidate School in March 1984 and was designated a Naval Aviator in March 1985. He was selected as an astronaut candidate in 1996, after earning a master of science degree in aeronautical engineering in June 1995. In July 2004, Herrington served as the commander of the NEEMO 6 mission,…

From the vantage point of space aboard the International Space Station, NASA astronaut Andrew Morgan captured this image of a California wildfire. On his Facebook page, he said: “From the International Space Station I was able to catch these pictures of the California wildfires burning north of the Bay Area. Thinking of the people who have lost their homes and the brave first responders on the front lines protecting them.” In addition, NASA’s Earth-orbiting satellites are often the first to detect wildfires burning in remote regions, and the locations of new fires are sent directly to land managers worldwide within hours of the satellite overpass. Together, NASA instruments detect actively burning fires, track the transport of smoke from fires, provide information for fire management, and…

A Northrop Grumman Antares rocket is seen as it rolls out to Pad-0A, Tuesday, Oct. 29, 2019, at NASA’s Wallops Flight Facility in Virginia. Northrop Grumman’s 12th contracted cargo resupply mission with NASA to the International Space Station will deliver about 8,200 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory and its crew. Launch is scheduled for 9:59 a.m. EDT Saturday, Nov. 2. Image Credit: NASA/Bill Ingalls 2019年10月29日，星期二，诺斯罗普·格鲁曼公司的安塔瑞斯火箭在维吉尼亚州的瓦勒普斯飞行基地的OA发射平台滑出。格鲁曼公司与美国国家航空航天局(NASA)签订的第12次货物再补给任务，将向轨道实验室及其宇航员运送约8200磅的科学和研究、船员用品和车辆硬件。发射时间定于美国东部时间11月2日周六上午9点59分。 图片来源: NASA/Bill Ingalls

This view from NASA’s Juno spacecraft captures colorful, intricate patterns in a jet stream region of Jupiter’s northern hemisphere known as “Jet N3.” Jupiter’s cloud tops do not form a simple, flat surface. Data from Juno helped scientists discover that the swirling bands in the atmosphere extend deep into the planet, to a depth of about 1,900 miles (3,000 kilometers). At center right, a patch of bright, high-altitude “pop-up” clouds rises above the surrounding atmosphere. Citizen scientist Gerald Eichstädt created this enhanced-color image using data from the spacecraft’s JunoCam imager. The original image was taken on May 29, 2019, at 1:01 a.m. PDT (4:01 a.m. EDT) as the Juno spacecraft performed its 20th close flyby of Jupiter. At the time the image was taken, the…

Astronomers using data from the Chandra X-ray Observatory and other telescopes have put together a detailed map of a rare collision between four galaxy clusters. Eventually, all four clusters – each with a mass of at least several hundred trillion times that of the Sun – will merge to form one of the most massive objects in the universe. Galaxy clusters are the largest structures in the cosmos that are held together by gravity. Clusters consist of hundreds or even thousands of galaxies embedded in hot gas, and contain an even larger amount of invisible dark matter. Sometimes two galaxy clusters collide, as in the case of the Bullet Cluster, and occasionally more than two will collide at the same time. The new observations show…

The galaxy pictured in this Hubble image has an especially evocative name: the Medusa merger. Often referred to by its somewhat drier New General Catalogue designation of NGC 4194, this was not always one entity, but two. An early galaxy consumed a smaller gas-rich system, throwing out streams of stars and dust into space. These streams, seen rising from the top of the merged galaxy, resemble the writhing snakes that Medusa, a monster in ancient Greek mythology, famously had on her head in place of hair, lending the object its intriguing name. The legend of Medusa also held that anyone who saw her face would transform into stone. In this case, you can feast your eyes without fear on the center of the merged galaxy,…

Engineers and technicians at NASA’s Michoud Assembly Facility in New Orleans have structurally mated the first of four RS-25 engines to the core stage for NASA’s Space Launch System (SLS) rocket that will help power the first Artemis mission to the Moon. Integration of the RS-25 engines to the recently completed core stage structure is a collaborative, multistep process for NASA and its partners Boeing, the core stage lead contractor, and Aerojet Rocketdyne, the RS-25 engines lead contractor. To complete the installation, the technicians will now integrate the propulsion and electrical systems. The installation process will be repeated for each of the four RS-25 engines. The four RS-25 engines used for Artemis I were delivered to Michoud from Aerojet Rocketdyne’s facility at NASA’s Stennis Space…