觉醒的新生恒星

觉醒的新生恒星

ByNASA中文

Lying inside our home galaxy, the Milky Way, this Herbig–Haro object is a turbulent birthing ground for new stars in a region known as the Orion B molecular cloud complex, located 1,350 light-years away. Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars that form when narrow jets of partially ionized gas ejected by stars collide with nearby clouds of gas and dust. This image of Herbig-Haro Jet HH 24 was taken by the Hubble Space Telescope in 2015. When stars form within giant clouds of cool molecular hydrogen, some of the surrounding material collapses under gravity to form a rotating, flattened disk encircling the newborn star. Although planets will later congeal in the disk, at this early stage the protostar is…

地球可能被毛状暗物质包围着

地球可能被毛状暗物质包围着

ByNASA中文

The solar system might be a lot hairier than we thought. This illustration shows Earth surrounded by theoretical filaments of dark matter called “hairs.” Dark matter is an invisible, mysterious substance that makes up about 27 percent of all matter and energy in the universe. The regular matter, which makes up everything we can see around us, is only 5 percent of the universe. The rest is dark energy, a strange phenomenon associated with the acceleration of our expanding universe. The data on hairy dark matter is based on a study by NASA’s Jet Propulsion Laboratory Gary Prézeau that appeared in a 2015 article in the Astrophysical Journal. Learn more about hairy dark matter. Image Credit: NASA/JPL-Caltech 太阳系可能比我们想象的要毛茸茸的多。 这幅插图显示，地球被理论上称为“毛发”的暗物质细丝所包围。 暗物质是一种不可见的神秘物质，约占宇宙所有物质和能量的27%。构成我们周围所能看到的一切的常规物质，只占宇宙的5%。剩下的是暗能量，这是一种与我们膨胀的宇宙加速有关的奇怪现象。 关于有毛暗物质的数据是基于NASA喷气推进实验室加里·普雷佐（GaryPrézeau）的一项研究得出的，该研究发表在2015年的《天体物理学杂志》上。 了解有关毛状暗物质的更多信息。 图片来源：NASA/JPL-Caltech

卡罗尔·哈里森 (Carol Harrison)：看到所有事物的美

卡罗尔·哈里森 (Carol Harrison)：看到所有事物的美

ByNASA中文

Carol “Bird Song” Harrison is a a quality assurance specialist (QAS) working in the Mission Assurance Branch at NASA’s Langley Research Center. She has degrees in mechanical technology and mechanical engineering. After graduating from the NASA Apprentice Program in 1992, she worked as a wind tunnel technician for 29 years. She now is enjoying a career change as a QAS. She is a member of the Cheroenhaka Nottoway Indian Tribe of Southampton, Virginia. In this photo, she is standing next to the Coordinate Measurement Machine) she was using to measure “the table for fixturing the backplate for the new Exploration Extravehicular Mobility Unit spacesuit that is being designed and tested by NASA to support the 2024 mission to put the first woman and the next…

今天是黑洞星期五！

今天是黑洞星期五！

ByNASA中文

What is a black hole? A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos. Matter and radiation fall in, but they can’t get out. Two main classes of black holes have been extensively observed. Stellar-mass black holes with three to dozens of times the Sun’s mass are spread throughout our Milky Way galaxy, while supermassive monsters weighing 100,000 to billions of solar masses are found in the centers of most big galaxies, ours included. This image is an artist’s concept of a tidal…

阿尔忒弥斯1号堆叠起来

阿尔忒弥斯1号堆叠起来

ByNASA中文

The first of 10 pieces of the twin Space Launch System (SLS) rocket boosters for NASA’s Artemis I mission was placed on the mobile launcher Saturday, Nov. 21, 2020, inside the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida. Engineers used one of five overhead cranes to lift the segment from the VAB’s High Bay 4 to the newly renovated High Bay 3. The component is the bottom section of the booster, known as the aft assembly, which house the system that controls 70% of the steering during the rocket’s initial ascent. Over several weeks, the other segments will be stacked one at a time and topped with the forward assembly. Launching in 2021, Artemis I will be an uncrewed test of…

哨兵6号迈克尔·弗雷里奇卫星发射升空，监测全球海洋

哨兵6号迈克尔·弗雷里奇卫星发射升空，监测全球海洋

ByNASA中文

The SpaceX Falcon 9 rocket carrying the Sentinel-6 Michael Freilich spacecraft lifts off from Space Launch Complex 4 at Vandenberg Air Force Base in California, Nov. 21, 2020, at 12:17 p.m. EST. The Sentinel-6/Jason-CS (Continuity of Service) mission consists of the Sentinel-6 Michael Freilich satellite, which will be followed by its twin, the Sentinel-6B satellite, in 2025. Continuing the legacy of the Jason series missions, Sentinel-6/Jason-CS will extend the records of sea level into their fourth decade, collecting accurate measurements of sea surface height for more than 90 percent of the globals ocean, and providing crucial information for operational oceanography, marine meteorology, and climate studies. NASA’s Launch Services Program at Kennedy Space Center was responsible for launch management. Image Credit: SpaceX 美国东部时间2020年11月21日下午12点17分，SpaceX的猎鹰9号火箭搭载着哨兵6号迈克尔·弗雷里奇卫星从加利福尼亚州范登堡空军基地的航天发射基地4号发射升空。Sentinel-6/Jason CS（服务连续性）任务由哨兵6号迈克尔·弗雷里奇卫星组成，其孪生卫星哨兵6B号卫星将于2025年问世。为继承贾森系列任务的遗产，Sentinel-6/Jason-CS将把海平面记录延长到第四个十年，为90%以上的全球海洋收集精确的海平面高度测量，并为行动海洋学、海洋气象学和气候研究提供关键信息。NASA在肯尼迪航天中心的发射服务计划负责发射管理。 影像来源：SpaceX

哈勃望远镜拍摄到了宇宙肉桂面包

哈勃望远镜拍摄到了宇宙肉桂面包

ByNASA中文

Observed with the NASA/ESA Hubble Space Telescope, the faint galaxy featured in this image is known as UGC 12588. Unlike many spiral galaxies, UGC 12588 displays neither a bar of stars across its center nor the classic prominent spiral arm pattern. Instead, to a viewer, its circular, white and mostly unstructured center makes this galaxy more reminiscent of a cinnamon bun than a megastructure of stars and gas in space. Lying in the constellation of Andromeda in the Northern Hemisphere, this galaxy is classified as a spiral galaxy. Unlike the classic image of a spiral galaxy, however, the huge arms of stars and gas in UGC 12588 are very faint, undistinguished, and tightly wound around its center. The clearest view of the spiral arms comes…

马塞勒斯·普罗克特:带来一个独特的视角

马塞勒斯·普罗克特:带来一个独特的视角

ByNASA中文

Marcellus Proctor is an enrolled member of the Piscataway-Conoy Nation of Southern Maryland and the assistant chief in the Electrical Engineering Division at NASA’s Goddard Space Flight Center. In this position, he strives “to ensure that resources are allocated to support his employees in the building of flight hardware for Earth & Space Science missions.” Learn more about Marcellus Proctor. View the Native American Heritage Month Gallery. #NativeAmericanHeritageMonth Image Credit: Courtesy of Marcellus Proctor 塞勒斯·普洛克托是马里兰州南部皮斯卡塔威-科诺伊州的注册会员，也是美国宇航局戈达德太空飞行中心电子工程部的助理主任。在这个职位上，他努力“确保资源被分配到支持他的员工为地球和空间科学任务建造飞行硬件。” 了解更多关于马塞勒斯·普罗克托的信息。 查看印第安人遗产月画廊。 # NativeAmericanHeritageMonth 图片来源:由马塞勒斯·普罗克特提供

SpaceX载人龙飞船接近国际空间站

SpaceX载人龙飞船接近国际空间站

ByNASA中文

On Monday, Nov. 16, 2020, the SpaceX Crew Dragon arrived at the International Space Station for docking, carrying NASA astronauts Michael Hopkins, Victor Glover, Shannon Walker, and Japan Aerospace Exploration Agency astronaut Soichi Noguchi. In this image the Crew Dragon spacecraft was on approach to the space station and docked at 11:01 p.m. EST. Image Credit: NASA 2020年11月16日星期一，SpaceX的载人龙飞船抵达国际空间站进行对接，搭载着美国宇航局的宇航员迈克尔·霍普金斯、维克多·格洛弗、香农·沃克和日本航空航天探索机构的宇航员野口宗一。在这张图片中，载人龙飞船正在接近空间站，并在美国东部时间晚上11点01分对接。 图片来源:美国国家航空航天局

哈勃望远镜通过宇宙透镜观测星系

哈勃望远镜通过宇宙透镜观测星系

ByNASA中文

This NASA/ESA Hubble Space Telescope image features the galaxy LRG-3-817, also known as SDSS J090122.37+181432.3. The galaxy, its image distorted by the effects of gravitational lensing, appears as a long arc to the left of the central galaxy cluster. Gravitational lensing occurs when a large distribution of matter, such as a galaxy cluster, sits between Earth and a distant light source. As space is warped by massive objects, the light from the distant object bends as it travels to us and we see a distorted image of it. This effect was first predicted by Einstein’s general theory of relativity. Strong gravitational lenses provide an opportunity for studying properties of distant galaxies, since Hubble can resolve details within the multiple arcs that are one of the…