NASA向老师们致敬！

NASA向老师们致敬！

ByNASA中文

May 2-6, 2022, is Teacher Appreciation Week! At NASA, we know the importance of STEM (science, technology, engineering, and math) education, and we provide lesson plans and other tools to help out classrooms. Visit NASA STEM Engagement for lesson plans and more. In the Discovering Alien Oceans: Density lesson, teachers will help their students to learn more about Jupiter’s icy moon Europa, by using the mass and density of known substances to predict what exists underneath the surface. Image Credit: NASA/JPL 2022年5月2日至6日是教师感恩周！在NASA，我们知道STEM（科学、技术、工程和数学）教育的重要性，我们提供课程计划和其他工具来帮助课堂。 访问NASA STEM Engagement了解课程计划和更多信息。 在《发现外星海洋：密度》课程中，老师们将帮助他们的学生通过利用已知物质的质量和密度来预测木星的冰质卫星木卫二地表下存在的物质。 图片来源：NASA/JPL

米斯蒂·斯诺普科夫斯基：努力让商业太空成为现实

米斯蒂·斯诺普科夫斯基：努力让商业太空成为现实

ByNASA中文

Misty Snopkowski is NASA’s program executive for the Commercial Low-Earth Orbit (LEO) Development program, which works to create a robust commercial LEO economy by enabling the development of commercially owned and operated LEO destinations. Her responsibilities include the oversight of activities within the Commercial LEO Development Program portfolio. This includes the International Space Station Commercial Module contract with Axiom Space, Commercial LEO Destinations-funded Space Act Agreements with Blue Origin, Nanoracks, and Northrup Grumman, private astronaut missions to the station, and the Commercial Use Policy, which enables commercial and marketing opportunities on the space station. After beginning her aerospace career in aircraft maintenance and repair at AAR Landing Gear Corp., Snopkowski served as an engineer at United Space Alliance (USA) at both the Johnson and Kennedy…

水星的钠尾

水星的钠尾

ByNASA中文

2022年5月3日 Mercury’s Sodium Tail Image Credit & Copyright: Sebastian Voltmer Explanation: That’s no comet. Below the Pleiades star cluster is actually a planet: Mercury. Long exposures of our Solar System’s innermost planet may reveal something unexpected: a tail. Mercury’s thin atmosphere contains small amounts of sodium that glow when excited by light from the Sun. Sunlight also liberates these molecules from Mercury’s surface and pushes them away. The yellow glow from sodium, in particular, is relatively bright. Pictured, Mercury and its sodium tail are visible in a deep image taken last week from La Palma, Spain through a filter that primarily transmits yellow light emitted by sodium. First predicted in the 1980s, Mercury’s tail was first discovered in 2001. Many tail details were revealed in…

阿根廷上空的日偏食

阿根廷上空的日偏食

ByNASA中文

2022年5月2日 Partial Solar Eclipse over Argentina Image Credit & Copyright: Aixa Andrada Explanation: What’s happened to the Sun? Two days ago, parts of South America were treated to a partial solar eclipse — where the Moon blocked out part of the Sun. The featured image shows an image of the partially eclipsed Sun through clouds as it was setting over Patagonia, Argentina. In the tilted image, Earth is toward the right. During the eclipse, the Moon moved partly between Earth and the Sun. Although a visually impressive sight, the slight dimming of surroundings during this partial eclipse was less noticeable than dimming created by a thick cloud. In about two weeks, all of South America and part of North America will experience a total lunar…

首张黑洞事件视界尺度的影像

首张黑洞事件视界尺度的影像

ByNASA中文

2022年5月1日 First Horizon-Scale Image of a Black Hole Image Credit: Event Horizon Telescope Collaboration Explanation: What does a black hole look like? To find out, radio telescopes from around the Earth coordinated observations of black holes with the largest known event horizons on the sky. Alone, black holes are just black, but these monster attractors are known to be surrounded by glowing gas. This first image resolves the area around the black hole at the center of galaxy M87 on a scale below that expected for its event horizon. Pictured, the dark central region is not the event horizon, but rather the black hole’s shadow — the central region of emitting gas darkened by the central black hole’s gravity. The size and shape of the…

M44: 鬼宿星团

M44: 鬼宿星团

ByNASA中文

2022年4月30日 M44: The Beehive Cluster Image Credit & Copyright: Drew Evans Explanation: A mere 600 light-years away, M44 is one of the closest star clusters to our solar system. Also known as the Praesepe or the Beehive cluster its stars are young though, about 600 million years old compared to our Sun’s 4.5 billion years. Based on similar ages and motion through space, M44 and the even closer Hyades star cluster in Taurus are thought to have been born together in the same large molecular cloud. An open cluster spanning some 15 light-years, M44 holds 1,000 stars or so and covers about 3 full moons (1.5 degrees) on the sky in the constellation Cancer. Visible to the unaided eye, M44 has been recognized since antiquity….

宇航员维克多·格洛弗：激励华盛顿地区的学生

宇航员维克多·格洛弗：激励华盛顿地区的学生

ByNASA中文

NASA astronaut Victor Glover greets one of his youngest fans, 3-year-old Ezra Garrel, with a fist bump at the conclusion of an educational event for students in the Washington, DC area, Thursday, April 28, 2022, at the National Museum of African American History and Culture in Washington. Glover most recently served as pilot and second-in-command on the Crew-1 SpaceX Crew Dragon, named Resilience. The long-duration mission aboard the International Space Station returned to Earth on May 2, 2021. Image Credit: NASA/Bill Ingalls 2022年4月28日星期四，华盛顿国家非裔美国人历史与文化博物馆，NASA宇航员维克多·格洛弗在华盛顿特区为学生举办的教育活动结束时，用拳头向他最年轻的粉丝之一、3岁的埃兹拉·加勒尔致意。格洛弗最近担任了名为Resilience的Crew-1 SpaceX载人龙飞船的飞行员和副指挥官。2021年5月2日，他结束了国际空间站上的长期任务返回地球。 影像来源：NASA/Bill Ingalls

NGC 3628

NGC 3628

ByNASA中文

2022年4月29日 Portrait of NGC 3628 Image Credit & Copyright: Wilhelm Michael Kasakow, Olaf Guillaume Explanation: Sharp telescopic views of NGC 3628 show a puffy galactic disk divided by dark dust lanes. Of course, this portrait of the magnificent, edge-on spiral galaxy puts some astronomers in mind of its popular moniker, the Hamburger Galaxy. It also reveals a small galaxy nearby (below), likely a satellite of NGC 3628, and a very faint but extensive tidal tail. The drawn out tail stretches for about 300,000 light-years, even beyond the upper left edge of the frame. NGC 3628 shares its neighborhood in the local universe with two other large spirals M65 and M66 in a grouping otherwise known as the Leo Triplet. Gravitational interactions with its cosmic neighbors…

利用高空气球改进天气数据

利用高空气球改进天气数据

ByNASA中文

Researchers at Arizona State University in Tempe are evaluating a small, lightweight, efficient 3D imaging sensor designed for weather forecasting on consecutive balloon flights made possible by NASA’s Flight Opportunities program. Called CubeSounder, the innovation could benefit future balloon flights and CubeSats by enabling state-of-the-art atmospheric sounding capabilities – a process in which sensors probe the sky vertically for details on temperature, moisture, and water vapor, revealing subtle changes in the Earth’s atmosphere. The first of two NASA-supported flight tests for the technology took place in April in Tucson on a Stratollite high-altitude balloon from Tucson-based World View Enterprises. In this image, World View’s Stratollite high-altitude balloon is inflated on the launch pad in Tucson, Arizona on April 9, 2022. Image Credit: World View Enterprises…