每日一图 | Page 67 of 97

今天是黑洞星期五！

ByNASA中文 2020年11月28日2020年11月28日

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…

NASA·每日一图

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 2020年11月24日2020年11月24日

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

NASA·每日一图

哈勃望远镜拍摄到了宇宙肉桂面包

ByNASA中文 2020年11月21日2020年11月21日

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…

NASA·每日一图

马塞勒斯·普罗克特:带来一个独特的视角

ByNASA中文 2020年11月20日2020年11月20日

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

NASA·每日一图

SpaceX载人龙飞船接近国际空间站

ByNASA中文 2020年11月20日2020年11月20日

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

NASA·每日一图

哈勃望远镜通过宇宙透镜观测星系

ByNASA中文 2020年11月18日2020年11月18日

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…

NASA·每日一图

Crew-1开启历史性旅程

ByNASA中文 2020年11月17日2020年11月17日

Watching the launch from Firing Room four in the Launch Control Center at NASA’s Kennedy Space Center in Florida, Lee Rosen, vice president of Mission and Launch Operations at SpaceX, pats Norm Knight, deputy director of Flight Operations. At 7:27 p.m. ET, Nov. 15, 2020, the SpaceX Falcon 9 rocket carried the company’s Crew Dragon spacecraft on NASA’s SpaceX Crew-1 mission on a journey to the International Space Station. The flight carries Commander Mike Hopkins, pilot Victor Glover and astronaut Shannon Walker of NASA, and Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi to the orbital platform, as part of the agency’s Commercial Crew Program. Image Credit: NASA/Aubrey Gemignani 观看位于NASA佛罗里达州肯尼迪航天中心发射控制中心四号发射室的发射时，SpaceX任务与发射运营副总裁李·罗森(Lee Rosen)轻拍了飞行运营副总监诺姆·奈特(Norm Knight)。美国东部时间2020年11月15日晚上7:27 ，SpaceX猎鹰9号火箭载着该公司的载人龙飞船，执行NASA的SpaceX Crew-1任务前往国际空间站。作为NASA商业宇航员计划的一部分，此次飞行将指挥官迈克·霍普金斯（Mike Hopkins），美国宇航局飞行员Victor Glover和宇航员香农·沃克（Shannon Walker），以及日本宇航局（JAXA）宇航员野口顺一（Soichi Noguchi）送入轨道平台。图片来源：NASA / Aubrey Gemignani

NASA·每日一图

劳伦·丹森（Lauren Denson）：为喜悦而跳

ByNASA中文 2020年11月14日2020年11月14日

With a degree in computer engineering and computer science from the University of Southern California, Lauren Denson is now an quality engineer and supervisor at the Jet Propulsion Laboratory. Her advice: “Don’t be afraid to ask for help, and ask early. Pursuing a degree in STEM field is challenging so it’s extremely important to build your network. This helps in ways to ensure you’re not alone, build resources for the future for collaboration or building your career.” Learn more about Lauren Denson. View the Native American Heritage Month Gallery. #NativeAmericanHeritageMonth Image Credit: courtesy of Lauren Denson 劳伦·丹森（Lauren Denson）拥有南加州大学的计算机工程和计算机科学学位，现在是喷气推进实验室的质量工程师和主管。她的建议是：“不要害怕寻求帮助，及早提出要求。攻读STEM领域的学位具有挑战性，因此建立您的关系网非常重要。这有助于确保您不孤单，为未来的合作或职业发展积累资源。” 了解有关劳伦·丹森的更多信息。查看美国原住民遗产月画廊。 #NativeAmericanHeritageMonth 图片来源：劳伦·丹森提供

NASA·每日一图

哈勃望远镜拍摄的宇宙瀑布

ByNASA中文 2020年11月13日2020年11月13日

The galaxy UGCA 193, seen here by the NASA/ESA Hubble Space Telescope, is a galaxy in the constellation of Sextans (the Sextant). Looking rather like a waterfall, UGCA 193 appears to host many young stars, especially in the lower portion of this view, creating a striking blue haze and the sense that the stars are falling from “above.” The blue color of UGCA 193 indicates the stars that we see are hot — some more than six times hotter than our Sun. We know that cooler stars appear to our eyes as redder, and hotter stars appear bluer. A star’s surface temperature and color are also linked to its mass, with heavier stars “burning” at higher temperatures, resulting in a blue glow from their surfaces….

NASA·每日一图

准备发射哨兵-6号迈克尔·弗里利希卫星

ByNASA中文 2020年11月7日2020年11月7日

Inside SpaceX’s Payload Processing Facility at Vandenberg Air Force Base in California, the U.S.-European Sentinel-6 Michael Freilich ocean-monitoring satellite is being encapsulated in its payload fairing on Nov. 3, 2020. Sentinel-6 is scheduled to launch on Nov. 21, 2020, at 12:17 p.m. EST, atop the SpaceX Falcon 9 rocket from Space Launch Complex 4E at Vandenberg Air Force Base. A U.S.-European partnership, the Sentinel-6 Michael Freilich spacecraft will begin a five-and-a-half-year prime mission to collect the most accurate data yet on global sea level and how our oceans are rising in response to climate change. The mission will also collect precise data of atmospheric temperature and humidity that will help improve weather forecasts and climate models. The spacecraft is named after Dr. Michael Freilich, the…