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2023年11月28日 Ganymede from Juno Image Credit & Copyright: NASA/JPL-Caltech/SwRI/MSSS; Processing & License: Kevin M. Gill; Explanation: What does the largest moon in the Solar System look like? Jupiter‘s moon Ganymede, larger than even Mercury and Pluto, has an icy surface speckled wi
During its 40th close pass by Jupiter, our Juno spacecraft saw Ganymede cast a large, dark spot on the planet on Feb. 25, 2022. JunoCam captured this image from very close to Jupiter, making Ganymede’s shadow appear especially large. At the time the raw image was taken, the Juno spacecraft was about
2021年10月11日 Juno Flyby of Ganymede and Jupiter Video Credit: Images: NASA, JPL-Caltech, SWRI, MSSS; Animation: Koji Kuramura, Gerald Eichstädt, Mike Stetson; Music: Vangelis Explanation: What would it be like to fly over the largest moon in the Solar System? In June, the robotic Juno spacecraft flew
2021年8月21日 Triple Transit and Mutual Events Image Credit & Copyright: Christopher Go Explanation: These three panels feature the Solar System’s ruling gas giant Jupiter on August 15 as seen from Cebu City, Philippines, planet Earth. On that date the well-timed telescopic views detail some
天文学家首次在木星的卫星木卫三的大气中发现了水蒸气的证据。这种水蒸气是在木卫三表面的冰升华时形成的，也就是说，从固体变成气体。 科学家们利用NASA哈勃太空望远镜新的档案数据集，做出了这一发现，发表在《自然天文学》杂志上。 这张照片展示了1996年NASA哈勃太空望远镜观测到的木星卫星木卫三。木卫三位于5亿英里(超过6亿公里)之外，哈勃可以跟踪卫星上的变化，并在紫外和近红外波长揭示其他特征。天文学家现在利用哈勃望远镜提供的新的档案数据集，首次揭示了木星卫星木卫三大气中存在水蒸气的证据，这是由于水蒸气从卫星的冰面热逸出而来。 影像来源：NASA, ESA, John Spencer (SwRI
2021年06月14日 Ganymede from Juno Image Credit: NASA/JPL-Caltech/SwRI/MSSS; Processing & License: Kevin M. Gill; Explanation: What does the largest moon in the Solar System look like? Jupiter’s moon Ganymede, larger than even Mercury and Pluto, has an icy surface speckled with bright young c
