哈勃望远镜拍摄到彩色面纱的新景象
在这张由NASA/ESA哈勃太空望远镜拍摄的图像中，哈勃再次揭开了一颗著名且经常被拍摄的超新星遗迹——面纱星云的神秘面纱。
乌鲁鲁上空的银河
A starry sky is shown with the busy central band of our Milky Way Galaxy showing rising diagonally from the lower right. In the foreground are flat grasslands leading up to a huge orange rock mound named Uluru. Please see the explanation for more detailed information.
图中显示的是一片星空，银河系繁华的中央盘面从右下方斜向升起。前景是平坦的草原，通向一座巨大的橙色岩石丘，名为乌鲁鲁。有关更多详细信息，请参阅说明。
美国佛罗里达州上空的夜光云
A dawn sky is shown that is black at the top and brown near the horizon. Wispy clouds converge on the right turning from a white to a blue hue. Near the apex of this convergence is a crescent moon. Please see the explanation for more detailed information.
画面中展示的是黎明时分的天空，顶部是黑色，接近地平线的地方是棕色。右侧有几缕云彩汇聚在一起，颜色从白色逐渐变为蓝色。在汇聚的顶端有一弯新月。有关更多详细信息，请参阅说明。
研究物理科学家贾斯汀·理查森
“When I mentor students, their academic [talents] are a given. They’re very bright. They’re very smart. But I mentor them to teach them what they don’t learn in school: how to work with other people, how to seek help, and how to mature from a student to a professional. “ when you fail, it’s OK. Admit what you did wrong, be honest about it, and talk through it. Don’t hide it. Don’t avoid it. We will deal with it together. “That takes a lot of courage and a lot of maturity, but I try to show them to grow from the challenge and move past it. Face it head on. That is one thing that I did not learn [growing up] and had to learn…
节日钟声敲响
The ice giant Uranus and its rings steal the show in this Dec. 18, 2023, image from the James Webb Space Telescope. The telescope captured new images of Uranus, revealing detailed features of the planet’s rings and seasonal north polar cap, as well as bright storms near and below the southern border of the cap. This Webb image also shows 14 of the planet’s 27 moons: Oberon, Titania, Umbriel, Juliet, Perdita, Rosalind, Puck, Belinda, Desdemona, Cressida, Ariel, Miranda, Bianca, and Portia. Webb’s extreme sensitivity also picks up a smattering of background galaxies—most appear as orange smudges, and there are two larger, fuzzy white galaxies to the right of the planet in this field of view. Image Credit: NASA, ESA, CSA, STScI 在这张来自詹姆斯·韦伯太空望远镜的2023年12月18日的照片中，冰巨星天王星及天王星环引人注目。该望远镜拍摄到了天王星的新图像，揭示了行星环和季节性北极帽的详细特征，以及帽南部边界附近和下方的明亮风暴。 韦伯的这张图片还显示了这颗行星27颗卫星中的14颗：天卫四（Oberon）、天卫三（Titania）、天卫二（Umbriel）、天卫十一（Juliet）、Perdita、Rosalind、天卫十五（Puck）、天卫八（Bianca）、天卫十（Desdemona）、天卫九（Cressida）、天卫一（Ariel）、天卫五（Miranda）、天卫八（Bianca）和天卫十二（Portia）。韦伯的极高灵敏度还拍摄到一些背景星系——大多数都是橙色的斑点，在这张视野中，行星的右侧有两个较大的、模糊的白色星系。 影像来源：NASA
冰岛瀑布上空的彩虹极光
2023年12月27日 Rainbow Aurora over Icelandic Waterfall Image Credit & Copyright: Stefano Pellegrini Explanation: Yes, but can your aurora do this? First, yes, auroras can look like rainbows even though they are completely different phenomena. Auroras are caused by Sun-created particles being channeled into Earth’s atmosphere by Earth’s magnetic field, and create colors by exciting atoms at different heights. Conversely, rainbows are created by sunlight backscattering off falling raindrops, and different colors are refracted by slightly different angles. Unfortunately, auroras can’t create waterfalls, but if you plan well and are lucky enough, you can photograph them together. The featured picture is composed of several images taken on the same night last month near the Skógafoss waterfall in Iceland. The planning centered on capturing the central band…
IC 443: 水母星云
2023年12月26日 IC 443: The Jellyfish Nebula Image Credit & Copyright: David Payne Explanation: Why is this jellyfish swimming in a sea of stars? Drifting near bright star Eta Geminorum, seen at the right, the Jellyfish Nebula extends its tentacles from the bright arcing ridge of emission left of center. In fact, the cosmic jellyfish is part of bubble-shaped supernova remnant IC 443, the expanding debris cloud from a massive star that exploded. Light from the explosion first reached planet Earth over 30,000 years ago. Like its cousin in astronomical waters, the Crab Nebula supernova remnant IC 443 is known to harbor a neutron star — the remnant of the collapsed stellar core. The Jellyfish Nebula is about 5,000 light-years away. At that distance, the featured…
大教堂、山峰与月亮
2023年12月25日 Cathedral, Mountain, Moon Image Credit & Copyright: Valerio Minato Explanation: Single shots like this require planning. The first step is to realize that such an amazing triple-alignment actually takes place. The second step is to find the best location to photograph it. But it was the third step: being there at exactly the right time — and when the sky was clear — that was the hardest. Five times over six years the photographer tried and found bad weather. Finally, just ten days ago, the weather was perfect, and a photographic dream was realized. Taken in Piemonte, Italy, the cathedral in the foreground is the Basilica of Superga, the mountain in the middle is Monviso, and, well, you know which moon is in the…
丘比特！加油，唐纳和巴瑞！
In this image from Dec. 8, 2017, four reindeer walk past the Balloon Array for Radiation-belt Relativistic Electron Losses, or BARREL, payload on the launch pad at Esrange Space Center near Kiruna, Sweden. BARREL primarily measured X-rays in Earth’s atmosphere near the North and South Poles. These X-rays are caused by electrons that rain down, or precipitate, into the atmosphere from the giant swaths of radiation that surround Earth, called the Van Allen Belts. Understanding this radiation and its interaction with Earth’s atmosphere helps us to learn about planetary radiation belts, and to better protect satellites that orbit Earth. The primary BARREL mission ended when scientists sent their last balloon over Sweden on Aug. 30, 2016. Recovered BARREL payloads were launched as targets of opportunities…
NGC 2440: 新白矮星的茧
2023年12月24日 NGC 2440: Cocoon of a New White Dwarf Image Credit: NASA, ESA, Hubble; Processing: H. Bond (STScI), R. Ciardullo (PSU), Forrest Hamilton (STScI) Explanation: What’s that in the center? Like a butterfly, a white dwarf star begins its life by casting off a cocoon of gas that enclosed its former self. In this analogy, however, the Sun would be a caterpillar and the ejected shell of gas would become the prettiest cocoon of all. In the featured cocoon, the planetary nebula designated NGC 2440 contains one of the hottest white dwarf stars known. The white dwarf can be seen as the bright orange dot near the image center. Our Sun will eventually become a white dwarf butterfly, but not for another 5 billion years….