NASA·每日一图 | Page 68 of 146

夜空和国家公园

ByNASA中文 2022年4月16日2022年4月16日

NASA and the National Park Service worked together to create a web-based tool that helps park managers better understand the impact of outdoor lighting and noise on animal species in national parks. The website allows park managers to choose a time period, such as the spring or winter seasons, and then zoom into a particular park to see sound and nighttime lights data and determine which animal species might be at risk from those sensory stimuli. Observations from space, such as nighttime light data from the NASA/NOAA Suomi NPP satellite used to produce this United States map, help to better gauge the impact of outdoor lighting on animal species in national parks. April 16-24, 2022, is National Park Week. Parks across the country are hosting…

NASA·每日一图

寻找超大质量黑洞的起源

ByNASA中文 2022年4月15日2022年4月15日

Astronomers have identified a rapidly growing black hole in the early universe that is considered a crucial “missing link” between young star-forming galaxies and the first supermassive black holes, using data from the Hubble Space Telescope to make this discovery. This artist’s impression is of a supermassive black hole that is inside the dust-shrouded core of a vigorously star-forming “starburst” galaxy. It will eventually become an extremely bright quasar once the dust is gone. Discovered in a Hubble deep-sky survey, the dusty black hole dates back to only 750 million years after the Big Bang. Image Credit: NASA, ESA, N. Bartmann 天文学家利用哈勃太空望远镜的数据，在早期宇宙中发现了一个快速增长的黑洞，该黑洞被认为是年轻恒星形成的星系和第一个超大质量黑洞之间的一个关键的 “缺失环节”。这幅艺术家的作品描绘的是一个超大质量黑洞，它位于一个活跃的恒星形成的“星爆”星系的尘埃覆盖的核心内部。一旦尘埃消失，它最终将成为一个极其明亮的类星体。哈勃望远镜在一次深空探测中发现了这一尘埃黑洞，它的历史可以追溯到宇宙大爆炸后7.5亿年。影像来源：NASA, ESA, N. Bartmann

NASA·每日一图

太空蝴蝶

ByNASA中文 2022年4月14日2022年4月14日

What looks like a red butterfly in space is in reality a nursery for hundreds of baby stars, revealed in this infrared image from NASA’s Spitzer Space Telescope. Officially named W40, the butterfly is a nebula – a giant cloud of gas and dust in space where new stars may form. The butterfly’s “wings” are giant bubbles of hot, interstellar gas blowing from the hottest, most massive stars in this region. The material that forms W40’s wings was ejected from a dense cluster of stars that lies between the wings in the image. The hottest, most massive of these stars, W40 IRS 1a, lies near the center of the star cluster. W40 is about 1,400 light-years from the Sun, about the same distance as the…

NASA·每日一图

1981年4月12日：首次航天飞机任务发射

ByNASA中文 2022年4月13日2022年4月13日

In the early morning hours of April 12, 1981, NASA launched is first Space Transportation System, or space shuttle, mission, carrying astronauts John Young and Robert Crippen into orbit. Mission Commander John Youn had already flown in space four times, including a walk on the Moon in 1972. Bob Crippen, the pilot, was a Navy test pilot who would go on to command three future shuttle missions. But nothing either man had done or would do was quite like this. On that spring morning – just 20 years to the day since Russian Yuri Gagarin became the first human in space – all of that was yet to come. America had not launched a human into space in six years, and to that point every…

NASA·每日一图

当星系碰撞

ByNASA中文 2022年4月12日2022年4月12日

A spectacular head-on collision between two galaxies fueled the unusual triangular-shaped star-birthing frenzy, as captured in this image from the Hubble Space Telescope. The interacting galaxy duo is collectively called Arp 143. The pair contains the glittery, distorted, star-forming spiral galaxy NGC 2445 at right, along with its less flashy companion, NGC 2444 at left. Astronomers suggest that the galaxies passed through each other, igniting the uniquely shaped star-formation firestorm in NGC 2445, where thousands of stars are bursting to life on the right-hand side of the image. This galaxy is awash in star birth because it is rich in gas, the fuel that makes stars. However, it hasn’t yet escaped the gravitational clutches of its partner NGC 2444, shown on the left side of…

NASA·每日一图

Axiom 1号任务位于39A发射台，阿尔忒弥斯1号任务位于39B发射台

ByNASA中文 2022年4月9日2022年4月9日

Axiom Mission 1 (Ax-1) is in the foreground on Launch Pad 39A with NASA’s Artemis I in the background on Launch Pad 39B on April 6, 2022. This is the first time two totally different types of rockets and spacecraft designed to carry humans are on the sister pads at the same time—but it won’t be the last as NASA’s Kennedy Space Center in Florida continues to grow as a multi-user spaceport to launch both government and commercial rockets. Ax-1 liftoff is scheduled at 11:17 a.m. EDT Friday, April 8, from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Image Credit: NASA/Jamie Peer 2022年4月6日，Axiom1号任务（Ax-1）在前景的39A发射场，NASA的阿尔忒弥斯1号任务在后景的39B发射场。这是两种完全不同类型的运载人类的火箭和航天器首次同时出现在姐妹发射平台上，但这不会是最后一次，因为NASA位于佛罗里达州的肯尼迪航天中心将继续发展为一个多用户太空港，可以发射政府和商业火箭。 Ax-1计划于美国东部夏令时4月8日星期五上午11:17从佛罗里达州NASA肯尼迪航天中心39A发射场发射。影像来源：NASA/Jamie Peer

NASA·每日一图

日本的艺予诸岛

ByNASA中文 2022年4月9日2022年4月9日

Japan’s Geiyo Archipelago, in the Seito Inland Sea, was once home to pirates. From the 9th to the 16th centuries, the pirates dominated the Inland Sea and terrorized the coasts of East Asia. Until the Shimanami Kaido (Inland Wave Sea Road) was completed in 1999, the Geiyo Islands were a remote region, accessible only by boat. This ASTER image was acquired Aug. 19, 2010. With its 14 spectral bands from the visible to the thermal infrared wavelength region and its high spatial resolution of about 50 to 300 feet (15 to 90 meters), ASTER images Earth to map and monitor the changing surface of our planet. ASTER is one of five Earth-observing instruments launched Dec. 18, 1999, on Terra. The instrument was built by Japan’s…

NASA·每日一图

测试未来的飞机

ByNASA中文 2022年4月7日2022年4月7日

NASA and industry partners are working towards a future that sees aviation meet cleaner sustainability standards. To that end, new designs for the airplanes of tomorrow, such as the Transonic Truss-Braced Wing (TTBW) concept shown in this image from 2021, are being tested by researchers and engineers. The TTBW is essentially a classic tube-and-wing passenger aircraft whose wings are extremely long and thin – so much that they need a little help to hold them up. By narrowing the thickness of the wings and extending their length, drag is reduced, and 5-10 percent less fuel is burned than comparable narrowbody aircraft. This image was created using data from a computational fluid dynamics simulation – essentially a virtual wind tunnel test. The red and orange areas…

NASA·每日一图

冷如（干）冰

ByNASA中文 2022年4月6日2022年4月6日

Every winter, a layer of carbon dioxide frost (dry ice) forms on the surface of Mars. At its greatest extent in mid-winter, this frost reaches from the poles down to the middle latitudes, until it is too warm and sunny to persist. In most places this is around 50 degrees latitude, similar to the latitude of southern Canada on Earth. However, small patches of dry ice are found closer to the equator on pole-facing slopes, which are colder because they receive less sunlight. This image was taken in the middle of winter in Mars’ Southern Hemisphere, and shows a crater near 37 degrees south latitude. The south-facing slope has patchy bright frost, blue in enhanced color. This frost occurs in and around the many gullies…

NASA·每日一图

黎明时分的太空发射系统火箭

ByNASA中文 2022年4月6日2022年4月6日

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunrise atop a mobile launcher at Launch Complex 39B, Monday, April 4, 2022. From April 1-4, the Artemis I launch team is conducting the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of the Artemis I flight test, the wet dress rehearsal will run the launch team through operations to load propellant, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to practice timelines and procedures for launch. Image Credit: NASA/Joel Kowsky 2022年4月4日，星期一，黎明时分，在39B发射复合体的移动发射器上，可以看到NASA搭载猎户座航天器的空间发射系统（SLS）火箭。从4月1日至4日，阿尔忒弥斯一号任务发射团队将在佛罗里达州NASA肯尼迪航天中心进行湿彩排测试。在阿尔忒弥斯一号任务飞行试验之前，湿彩排将让发射团队完成装载推进剂、进行完整发射倒计时、展示回收倒计时时钟的能力、排空油箱以实践发射时间表和程序的操作。图片来源：NASA/Joel Kowsky