安塔瑞斯火箭发射到空间站

安塔瑞斯火箭发射到空间站

ByNASA中文

A Northrop Grumman Antares rocket, with the company’s Cygnus spacecraft aboard, launches at 9:16 p.m. EDT, Friday, Oct. 2, 2020, from the Mid Atlantic Regional Spaceport’s Pad-0A, at NASA’s Wallops Flight Facility in Virginia. Northrop Grumman’s 14th contracted cargo resupply mission for NASA to the International Space Station is carrying nearly 8,000 pounds of science and research, crew supplies, and vehicle hardware to the orbital laboratory and its crew. On Monday, Oct. 5, Cygnus was successfully berthed to the space station. Image Credit: NASA/Terry Zaperach 美国东部时间2020年10月2日星期五晚上9点16分，诺斯罗普·格鲁曼公司的安塔瑞斯火箭搭载着该公司的天鹅座宇宙飞船，从位于弗吉尼亚州NASA的瓦勒普斯飞行设施中大西洋中部地区航天中心的Pad-0A发射升空。诺斯罗普·格鲁曼公司为美国国家航空航天局(NASA)签订的第14项向国际空间站运送货物补给的合同，将向轨道实验室及其机组人员运送近8000磅的科研物资、人员补给和运载工具硬件。 10月5日星期一，天鹅座成功对接空间站。 图片来源:美国宇航局/特里·扎佩拉赫

哈勃影像：邻近的螺旋星系NGC 5643

哈勃影像：邻近的螺旋星系NGC 5643

ByNASA中文

2020年10月5日 NGC 5643: Nearby Spiral Galaxy from Hubble Image Credit: ESA/Hubble & NASA, A. Riess et al.; Acknowledgement: Mahdi Zamani Explanation: What’s happening at the center of spiral galaxy NGC 5643? A swirling disk of stars and gas, NGC 5643’s appearance is dominated by blue spiral arms and brown dust, as shown in the featured image taken by the Hubble Space Telescope. The core of this active galaxy glows brightly in radio waves and X-rays where twin jets have been found. An unusual central glow makes NGC 5643 one of the closest examples of the Seyfert class of galaxies, where vast amounts of glowing gas are thought to be falling into a central massive black hole. NGC 5643, is a relatively close 55 million light…

氧、氢和硫等原子发光波段的猎户大星云

氧、氢和硫等原子发光波段的猎户大星云

ByNASA中文

2020年10月4日 Orion Nebula in Oxygen, Hydrogen, and Sulfur Image Credit & Copyright: César Blanco González Explanation: Few astronomical sights excite the imagination like the nearby stellar nursery known as the Orion Nebula. The Nebula’s glowing gas surrounds hot young stars at the edge of an immense interstellar molecular cloud. Many of the filamentary structures visible in the featured image are actually shock waves – fronts where fast moving material encounters slow moving gas. The Orion Nebula spans about 40 light years and is located about 1500 light years away in the same spiral arm of our Galaxy as the Sun. The Great Nebula in Orion can be found with the unaided eye just below and to the left of the easily identifiable belt of three…

NASA一周新闻速览（2020.10.3）

NASA一周新闻速览（2020.10.3）

ByNASA中文

空间站下一批乘员出发前往发射地；新一批货资发射抵达空间站；准备好进行某种首次空间站乘员轮换任务……最近新闻速递，尽在「本周NASA」！ Credit：NASA 9月27日，包括NASA凯特·鲁宾斯（Kate Rubins）在内的空间站第64号远征队（Expedition 64）成员参加了在俄罗斯星城举行的传统发射前典礼，并前往哈萨克斯坦的拜科努尔航天发射场（Baikonur Cosmodrome）完成训练。鲁宾斯与俄罗斯宇航员谢尔盖·雷吉科夫（Sergey Ryzhikov）和谢尔盖·库德·斯维奇科夫（Sergey Kud-Sverchkov）计划于10月14日发射前往空间站。 Credit：NASA 诺斯罗普·格鲁曼公司（Northrop Grumman）的天鹅座（Cygnus）货运飞船于10月2日从NASA位于弗吉尼亚州的沃洛普斯飞行研究所（Wallops Flight Facility）发射到了空间站。天鹅座飞船载有近8000磅（约3600千克）的研究、乘员补给品和硬件，以已故宇航员卡尔帕纳·乔拉（Kalpana Chawla）的名字命名，乔拉是在哥伦比亚号（Columbia）航天飞机事故中丧生的STS-107机组成员。 9月29日，NASA在约翰逊航天中心（Johnson Space Center）举办了一系列新闻发布会，预告NASA的SpaceX第一次载人飞行任务（Crew-1），这将是用美国商用航天器进行的首次国际空间站乘员轮换任务。“我们很高兴能有机会给我们的航天器命名，但与其等到航天器进入轨道，不如今天就与您分享。因此，事不宜迟，此后Crew-1龙机舱编号207将被称作‘恢复力号’（Resilience）。”该飞行任务计划于10月31日或之后从NASA的肯尼迪航天中心（Kennedy Space Center）发射升空。 哈勃在棒旋星系NGC 2525拍摄到的超新星爆发，最高峰值的亮度是太阳的5亿倍，NGC 2525位于南天船尾座，距离我们大约7000万光年。 Credits: NASA, ESA, and A. Riess (STScI/JHU) and the SH0ES team; acknowledgment: M. Zamani (ESA/Hubble) NASA的哈勃空间望远镜（Hubble Space Telescope）捕获了一颗距我们约7000万光年的恒星的瞬时影像，它首先在光芒万丈之时变成了超新星（supernova），然后慢慢暗淡了。这类超新星可以帮助天文学家测量宇宙的膨胀。 Credit：NASA 鉴于新冠疫情大流行，2020年的国际太空应用挑战赛（International Space Apps Challenge）已完全转为线上。10月2~4日的黑客马拉松主题是“采取行动”（Take Action），参与者须使用NASA的数据解决地球上和太空中的现实世界问题。更多相关信息，包括最近结束的太空应用程序新冠肺炎挑战赛（Space Apps COVID-19 Challenge）的获胜者，请访问spaceappschallenge.org。 通过使用NASA凌星系外行星巡天卫星“苔丝”（Transiting Exoplanet Survey Satellite，TESS）的数据，新的行星巡逻（Planet Patrol）网站让公众在家中就能帮NASA寻找系外行星（exoplanet），即太阳系以外的行星世界。在一年时间里，“苔丝”就拍下了成千上万张快照，每张快照又包含成千上万颗可能的行星，对于天文学家来说，没有外界的帮助快照的数量实在过于庞大。 以上就是「本周 NASA」的全部内容！更多详细信息请访问nasa.gov/twan。

开车去太阳

开车去太阳

ByNASA中文

2020年10月3日 Driving to the Sun Image Credit: Solar Dynamics Observatory, NASA Explanation: How long would it take to drive to the Sun? Brittany age 7, and D.J. age 12, ponder this question over dinner one evening. James also age 7, suggests taking a really fast racing car while Christopher age 4, eagerly agrees. Jerry, a really old guy who is used to estimating driving time on family trips based on distance divided by speed, offers to do the numbers. “Let’s see … the Sun is 93 million miles away. If we drove 93 miles per hour the trip would only take us 1 million hours.” How long is 1 million hours? One year is 365 days times 24 hours per day, or 8,760 hours. One…

哈勃拍摄到银河魅力的照片

哈勃拍摄到银河魅力的照片

ByNASA中文

This stunning image by the NASA/ESA Hubble Space Telescope features the spiral galaxy NGC 5643 in the constellation of Lupus (the Wolf). Looking this good isn’t easy; 30 different exposures, for a total of nine hours of observation time, together with the high resolution and clarity of Hubble, were needed to produce an image of such high level of detail and beauty. NGC 5643 is about 60 million light-years away from Earth and has been the host of a recent supernova event (not visible in this latest image). This supernova (2017cbv) was a specific type in which a white dwarf steals so much mass from a companion star that it becomes unstable and explodes. The explosion releases significant amounts of energy and lights up that…

卫星捕捉到美国西部的火情

卫星捕捉到美国西部的火情

ByNASA中文

Our Aqua satellite captured this composite visible (left) and infrared (right) image on Sep. 29, 2020, which shows that fires and smoke continue to dominate the landscape of the western U.S. The visible image shows the smoke and the infrared image shows the heat from the fires (orange points). The California Department of Forestry and Fire Protection (CAL Fire) page for Sep. 30 finds many large fires still active throughout California and the Pacific Northwest. The August Complex in California continues to be the largest wildfire still active and uncontained at 949,055 acres, located in Glenn, Lake, Mendocino, Tehama, and Trinity Counties. The August Complex is the largest wildfire in California’s history having surpassed the Mendocino Complex fire which burned 459,123 acres in July 2018….

反光镜:从阿波罗到火星

反光镜:从阿波罗到火星

ByNASA中文

When Apollo 11 landed on the Moon, the crew brought devices with them called retroreflectors, which are essentially small arrays of mirrors. The plan was for scientists on Earth to aim lasers at them and calculate the time it took for the beams to return. This provided exceptionally precise measurements of the Moon’s orbit and shape, including how it changed slightly based on Earth’s gravitational pull. Research with these Apollo-era lunar retroreflectors continues to this day. Scientists want to perform similar experiments on the Red Planet and NASA’s Perseverance rover – scheduled to land on Mars on Feb. 18, 2021 – carries with it the Laser Retroreflector Array. There’s also small one aboard the agency’s InSight lander, called Laser Retroreflector for InSight. While there is…

骑车去月亮

骑车去月亮

ByNASA中文

2020年10月02日 Biking to the Moon Image Credit & Copyright: Susan Snow Explanation: As you watched October’s first Full Moon rise last night, the Full Moon closest to the northern autumnal equinox, you were probably asking yourself, “How long would it take to bike to the Moon?” Sure, Apollo 11 astronauts made the trip in 1969, from launch to Moon landing, in about 103 hours or 4.3 days. But the Moon is 400,000 kilometers away. This year, the top bike riders in planet Earth’s well-known Tour de France race covered almost 3,500 kilometers in 21 stages after about 87 hours on the road. That gives an average speed of about 40 kilometers per hour and a lunar cycling travel time of 10,000 hours, a little over…

太阳湖：火星之眼

太阳湖：火星之眼

ByNASA中文

2020年10月1日 Solis Lacus: The Eye of Mars Image Credit & Copyright: Damian Peach Explanation: As telescopes around planet Earth watch, Mars is growing brighter in night skies, approaching its 2020 opposition on October 13. Mars looks like its watching too in this view of the Red Planet from September 22. Mars’ disk is already near its maximum apparent size for earthbound telescopes, less than 1/80th the apparent diameter of a Full Moon. The seasonally shrinking south polar cap is at the bottom and hazy northern clouds are at the top. A circular, dark albedo feature, Solis Lacus (Lake of the Sun), is just below and left of disk center. Surrounded by a light area south of Valles Marineris, Solis Lacus looks like a planet-sized pupil,…