保护地球，探索宇宙，发现文明
2023年11月5日 Creature Aurora Over Norway Image Credit & Copyright: Ole C. Salomonsen (Arctic Light Photo) Explanation: It was Halloween and the sky looked like a creature. Exactly which creature, the astrophotographer was unsure (but possibly you can suggest one). Exactly what caused this eerie apparition in 2013 was sure: one of the best auroral displays...
2023年11月4日 Dinkinesh Moonrise Image Credit: NASA/Goddard, SwRI, Johns Hopkins APL, NOIRLab Explanation: Last Wednesday the voyaging Lucy spacecraft encountered its first asteroid, 152830 Dinkinesh, and discovered the inner-main belt asteroid has a moon. From a distance of just over 400 kilometers, Lucy’s Long-Range Reconnaissance Imager captured this c...
11月17日晚上，穿上暖和的衣服，前往黑暗的天空，观看狮子座流星雨的峰值。整个月都在水瓶座寻找土星——这只是天空中与水有关的几个星座之一。如果你在太阳升起之前起床，你将有机会在早上观测天空两侧的金星和木星。
2023年11月3日 Jupiter by Moonlight Image Credit & Copyright: Giorgia Hofer Explanation: That bright beacon you’ve seen rising in the east just after sunset is Jupiter. Climbing high in midnight skies, our Solar System’s ruling gas giant was at its 2023 opposition, opposite the Sun in planet Earth’s sky, on November 2. But only a few days ...
The James Webb Space Telescope captures new details of the Crab Nebula, 6,500 light-years away, in this image released on Oct. 30, 2023. While these remains of an exploded star have been well-studied by multiple observatories, including the Hubble Space Telescope, Webb’s infrared sensitivity and resolution offer new clues into the makeup and origins of this ...
2023年11月2日 The Fornax Cluster of Galaxies Image Credit & Copyright: Marcelo Rivera Explanation: Named for the southern constellation toward which most of its galaxies can be found, the Fornax Cluster is one of the closest clusters of galaxies. About 62 million light-years away, it’s over 20 times more distant than our neighboring Andromeda Galaxy,...
While aboard the International Space Station on Oct. 26, NASA astronaut Jasmin Moghbeli captured the city lights of the northeastern United States and major urban areas including Long Island, New York; Philadelphia, Pennsylvania; and Washington, D.C. At the time of this photograph, the orbital lab was 262 miles above Maine. In 24 hours, the space station mak...
詹姆斯·韦伯太空望远镜在高分辨率的近红外光下拍摄到一对紧密结合的活跃恒星，被称为赫比格-哈罗46/47。 影像来源：NASA 詹姆斯·韦伯太空望远镜真正探索了未知的世界，展示了以前看不见的宇宙角落的令人惊叹的图像，这是因为望远镜的21英尺分段镜在太空中展开并自行组装。 数十年来，人们一直在对材料、设计和工艺进行测试，以开发太空中最大的望远镜。然而，整个项目太过复杂，无法在地面、零下400华氏度和其他类似太空的条件下进行大规模测试。 相反，工程师们依靠软件模拟来了解望远镜在不同空间条件下的表现，这项工作有助于推进整个鸡成计算机建模领域。 Ansys Zemax OpticStudio软件包，图为詹姆斯·韦伯太空望远镜镜镜面建模的演示，由于在天文台的开发中使用，它配备了新的功能和特性。 影像来源：Ansys Inc...
2023年11月1日 Annular Solar Eclipse over Utah Image Credit & Copyright: MaryBeth Kiczenski Explanation: Part of the Sun disappeared earlier this month, but few people were worried. The missing part, which included the center from some locations, just went behind the Moon in what is known as an annular solar eclipse. Featured here is an eclipse sequence tak...
On Sept. 7, 2023, during its 54th close flyby of Jupiter, NASA’s Juno mission captured this view of an area in the giant planet’s far northern regions called Jet N7. The image shows turbulent clouds and storms along Jupiter’s terminator, the dividing line between the day and night sides of the planet. The low angle of sunlight highlights the complex topograp...