木星上的卫星
(原标题: Moons Across Jupiter)
2023-06-13
浏览次数: 14
木星的卫星围绕木星运行。这段特色视频描绘了木卫二和木卫一这两颗木星最大的卫星在木星的大红斑前穿过，大红斑是我们太阳系已知的最大的风暴系统。这段视频是由卡西尼号宇宙飞船在2000年经过木星前往土星时拍摄的图像组成的。可见的两颗卫星是远处的火山卫一和冰冷的木卫二。在延时拍摄的视频中，木卫二似乎超过了木卫一，这很奇怪，因为木卫一离木星更近，移动速度更快。解释是快速的卡西尼号航天器的运动在成像过程中显著改变了相机的位置。目前，美国国家航空航天局的朱诺号探测器正在访问木星，而欧洲航天局4月份发射的木星冰冻卫星探测器（JUICE）正在途中。
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Jupiter's moons circle Jupiter. The featured video depicts Europa and Io, two of Jupiter's largest moons, crossing in front of the grand planet's Great Red Spot, the largest known storm system in our Solar System. The video was composed from images taken by the robotic Cassini spacecraft as it passed Jupiter in 2000, on its way to Saturn. The two moons visible are volcanic Io, in the distance, and icy Europa. In the time-lapse video, Europa appears to overtake Io, which is odd because Io is closer to Jupiter and moves faster. The explanation is that the motion of the fast Cassini spacecraft changes the camera location significantly during imaging. Jupiter is currently being visited by NASA's robotic Juno spacecraft, while ESA's Jupiter Icy Moons Explorer (JUICE), launched in April, is enroute.