保护地球, 探索宇宙, 发现文明
2022年12月23日 Cassini Looks Out from Saturn Image Credit: NASA, JPL-Caltech, Space Science Institute Explanation: This is what Saturn looks like from inside the rings. In 2017, for the first time, NASA directed the Cassini spacecraft to swoop between Saturn and its rings. During the dive, the robotic spacecraft took hundreds of images showing unprecedented det...
2022年11月26日 Saturn at Night NASA, JPL-Caltech, Space Science Institute, Mindaugas Macijauskas Explanation: Saturn is still bright in planet Earth’s night skies. Telescopic views of the distant gas giant and its beautiful rings often make it a star at star parties. But this stunning view of Saturn’s rings and night side just isn’t possible f...
2022年7月24日 Saturn in Infrared from Cassini Image Credit: NASA, JPL-Caltech, SSI; Processing: Maksim Kakitsev Explanation: Many details of Saturn appear clearly in infrared light. Bands of clouds show great structure, including long stretching storms. Also quite striking in infrared is the unusual hexagonal cloud pattern surrounding Saturn’s North Pole....
2022年1月23日 Saturn, Tethys, Rings, and Shadows Image Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA Explanation: Seen from ice moon Tethys, rings and shadows would display fantastic views of the Saturnian system. Haven’t dropped in on Tethys lately? Then this gorgeous ringscape from the Cassini spacecraft will have to do for now. Caught in sunlight j...
2022年1月4日 Moons Beyond Rings at Saturn Image Credit: NASA, ESA, JPL, Cassini Imaging Team Explanation: What’s happened to that moon of Saturn? Nothing — Saturn’s moon Rhea is just partly hidden behind Saturn’s rings. In 2010, the robotic Cassini spacecraft then orbiting Saturn took this narrow-angle view looking across the Solar Syste...
2021年9月11日 Saturn at Night Image Credit: NASA, JPL-Caltech, Space Science Institute, Mindaugas Macijauskas Explanation: Still bright in planet Earth’s night skies, good telescopic views of Saturn and its beautiful rings often make it a star at star parties. But this stunning view of Saturn’s rings and night side just isn’t possible from tel...
2021年7月30日 Mimas in Saturnlight Image Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA Explanation: Peering from the shadows, the Saturn-facing hemisphere of Mimas lies in near darkness alongside a dramatic sunlit crescent. The mosaic was captured near the Cassini spacecraft’s final close approach on January 30, 2017. Cassini’s camera was pointe...
2021年06月27日 The Dancing Auroras of Saturn Image Credit: NASA, Cassini, VIMS Team, U. Arizona, U. Leicester, JPL, ASI Explanation: What drives auroras on Saturn? To help find out, scientists have sorted through hundreds of infrared images of Saturn taken by the Cassini spacecraft for other purposes, trying to find enough aurora images to correlate changes and...
横幅图片：土卫六的这些红外图像代表了关于这颗冰冷卫星表面最清晰的全球视野。这些图像是由美国国家航空航天局（NASA）“卡西尼”号（Cassini）所搭载的视觉和红外成像光谱仪（VIMS）采集的13年的数据形成。 来源：NASA/喷气推进实验室-加州理工学院（JPL-Caltech）/南特大学（University of Nantes）/亚利桑那大学（University of Arizona）。 NASA的科学家在土卫六泰坦（Titan）的大气层中发现了一种从未在其他星球大气层中发现的分子。事实上，许多化学家几乎没有听说过，也不知道如何拼写这种分子：环丙烯亚基（cyclopropenylidene）或C3H2。科学家们表示，这种简单的碳基分子可能是更复杂化合物的前体，这些化合物可以在土卫六上形成或供养潜在的生命...