韦伯的首张深场影像

韦伯的首张深场影像

ByNASA中文

2023年7月15日 Webb’s First Deep Field Image Credit: NASA, ESA, CSA, STScI, NIRCam Explanation: This stunning infrared image was released one year ago as the James Webb Space Telescope began its exploration of the cosmos. The view of the early Universe toward the southern constellation Volans was achieved in 12.5 hours of exposure with Webb’s NIRCam instrument. Of course the stars with six spikes are well within our own Milky Way. Their diffraction pattern is characteristic of Webb’s 18 hexagonal mirror segments operating together as a single 6.5 meter diameter primary mirror. The thousands of galaxies flooding the field of view are members of the distant galaxy cluster SMACS0723-73, some 4.6 billion light-years away. Luminous arcs that seem to infest the deep field are even more…

为未来NASA的3个阿尔忒弥斯任务猎户座载人舱欢呼

为未来NASA的3个阿尔忒弥斯任务猎户座载人舱欢呼

ByNASA中文

The Orion spacecraft for NASA’s crewed Artemis II (right), Artemis III (left) and Artemis IV (center) missions are stationed next to each other inside the high bay of the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida on June 22, 2023. Each capsule is in a different stage of production as technicians and engineers prepare the spacecraft to carry astronauts to and around the Moon on their upcoming flights. Technicians recently installed the heat shield on the Artemis II crew module, and teams are preparing to conduct acoustic testing later this summer. Once complete, the crew module will be joined with its service module in preparation to fly four astronauts around the Moon. The Artemis III crew module, which will…

巴西的新月形沙丘

巴西的新月形沙丘

ByNASA中文

Former NASA astronaut Jack Fischer captured this photograph of Lagoa dos Barros and crescent-shaped barchan dunes on the Atlantic coastline of southern Brazil on July 9, 2017, while aboard the International Space Station. Barchan dunes are sand dunes that form in areas with one wind direction and little vegetation. In this case, fierce winds from the Western Atlantic sculpt the sand along the coast into distinctive crescent shapes. The tips of barchan dunes point downwind, showing the prevailing wind direction. These fragile formations act as barriers keeping the wind and waves from penetrating inland, blunting the effect of storms and minimizing coastal erosion. See more photos of Earth taken from space. Image Credit: NASA/ Jack Fischer 2017年7月9日，前NASA宇航员杰克·菲舍尔在国际空间站上拍摄了这张巴西南部大西洋海岸线上的拉戈亚·多斯·巴罗斯和新月形沙丘的照片。 新月形沙丘是在单一风向和植被稀少的地区形成的沙丘。在这种情况下，来自西大西洋的强风将海岸的沙子塑造成独特的新月形。新月形沙丘的尖端指向下风，表明盛行风向。这些脆弱的地层充当屏障，阻止风和海浪穿透到内陆，减弱风暴的影响，最大限度地减少海岸侵蚀。 查看更多从太空拍摄的地球照片。 图片来源: NASA/ Jack Fischer

近日点附近的彗星C/2023 E1 ATLAS

近日点附近的彗星C/2023 E1 ATLAS

ByNASA中文

2023年7月14日 Comet C/2023 E1 ATLAS near Perihelion Image Credit & Copyright: Dan Bartlett Explanation: Comet C/2023 E1 (ATLAS) was just spotted in March, another comet found by the NASA funded Asteroid Terrestrial-impact Last Alert System. On July 1 this Comet ATLAS reached perihelion, its closest approach to the Sun. Shortly afterwards the telescopic comet was captured in this frame sporting a pretty greenish coma and faint, narrow ion tail against a background of stars in the far northern constellation Ursa Minor. This comet’s closest approach to Earth is still to come though. On August 18 this visitor to the inner Solar System will be a mere 3 light-minutes or so from our fair planet. Based on its inclination to the ecliptic plane and orbital period…

韦伯望远镜的心宿增四星云

韦伯望远镜的心宿增四星云

ByNASA中文

2023年7月13日 Webb’s Rho Ophiuchi Image Credit: NASA, ESA, CSA, STScI, Klaus Pontoppidan (STScI), Processing: Alyssa Pagan (STScI) Explanation: A mere 390 light-years away, Sun-like stars and future planetary systems are forming in the Rho Ophiuchi molecular cloud complex, the closest star-forming region to our fair planet. The James Webb Space Telescope’s NIRCam peered into the nearby natal chaos to capture this infrared image at an inspiring scale. The spectacular cosmic snapshot was released to celebrate the successful first year of Webb’s exploration of the Universe. The frame spans less than a light-year across the Rho Ophiuchi region and contains about 50 young stars. Brighter stars clearly sport Webb’s characteristic pattern of diffraction spikes. Huge jets of shocked molecular hydrogen blasting from newborn stars are red…

韦伯的第一张深场影像

韦伯的第一张深场影像

ByNASA中文

President Joe Biden unveiled this image of the galaxy cluster SMACS 0723 during a White House event on July 11, 2022. One year later, the James Webb Space Telescope has changed the way we see the universe. From new views of old subjects to discoveries on the chemical composition of exoplanets, Webb has helped us gather clues about the origins of our own solar system and beyond. To celebrate the completion of a successful first year, NASA has released Webb’s image of a small star-forming region in the Rho Ophiuchi cloud complex. Learn more about SMACS 0723 and how Webb captured this image. Image Credit: NASA, ESA, CSA, and STScI 2022年7月11日，美国总统乔·拜登在白宫的一次活动中发布了这张星系团SMACS 0723的照片。一年后，詹姆斯·韦伯太空望远镜改变了我们观察宇宙的方式。从对旧主题的新观测，到对系外行星化学成分的发现，韦伯帮助我们收集了有关太阳系起源的线索。 为了庆祝第一年观测的成功完成，NASA发布了韦伯在蛇夫座星云复合体中一个小恒星形成区域的图像。 了解更多关于SMACS 0723的信息，以及韦伯如何拍摄到这张照片。 图片来源: NASA, ESA, CSA和STScI

螺旋星系NGC 1398的环与棒

螺旋星系NGC 1398的环与棒

ByNASA中文

2023年7月12日 Rings and Bar of Spiral Galaxy NGC 1398 Image Credit: Mark Hanson; Data: Mike Selby Explanation: Why do some spiral galaxies have a ring around the center? Spiral galaxy NGC 1398 not only has a ring of pearly stars, gas and dust around its center, but a bar of stars and gas across its center, and spiral arms that appear like ribbons farther out. The featured deep image from Observatorio El Sauce in Chile shows the grand spiral galaxy in impressive detail. NGC 1398 lies about 65 million light years distant, meaning the light we see today left this galaxy when dinosaurs were disappearing from the Earth. The photogenic galaxy is visible with a small telescope toward the constellation of the Furnace (Fornax). The…

阿姆斯特朗飞行研究中心的野生动物

阿姆斯特朗飞行研究中心的野生动物

ByNASA中文

A bobcat surveys the landscape at NASA’s Armstrong Flight Research Center in Edwards, California in this March 11, 2021, image. The spotted feline makes its home on the more than 300,000 acres of Mojave Desert surrounding the NASA facility housed at Edwards Air Force Base. Named in honor of Neil A. Armstrong, a former research test pilot at the center and the first man to step on the moon, Armstrong is NASA’s primary center for high-risk, atmospheric flight research and test projects. Image Credit: NASA/Carla Thomas 在这张2021年3月11日的照片中，一只山猫在加利福尼亚州爱德华兹的NASA阿姆斯特朗飞行研究中心勘察风景。这种斑点猫科动物在超过30万英亩位于爱德华兹空军基地的NASA设施周围的莫哈韦沙漠安家。阿姆斯特朗飞行研究中心是NASA高风险大气飞行研究和测试项目的主要中心，是为了纪念该中心的前研究试飞员、第一个踏上月球的人尼尔·A·阿姆斯特朗而命名。 影像来源：NASA/Carla Thomas