在木卫三的阴影里
(原标题: In Ganymede's Shadow)
2022-10-07
浏览次数: 12
上个月底，在地球天空中与太阳相对的冲日点，木星也将在明年初接近近日点，即其椭圆轨道上离太阳最近的点。这使得木星离我们美丽的星球非常近，目前可以看到太阳系的气态巨行星。9月27日，这张清晰的木星图像是在亚利桑那州佛罗伦萨的一个后院用小型望远镜拍摄的。堆叠的视频帧展示了环绕行星的风包围的巨大世界。这颗气态巨行星上有暗带和亮带，还有旋转的椭圆形风暴和标志性的大红斑。伽利略的卫星木卫三在画面的右下方。太阳系最大的卫星和它的影子正在穿越木星南部的云顶。
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At opposition, opposite the Sun in Earth's sky, late last month Jupiter is also approaching perihelion, the closest point to the Sun in its elliptical orbit, early next year. That makes Jupiter exceptionally close to our fair planet, currently resulting in excellent views of the Solar System's ruling gas giant. On September 27, this sharp image of Jupiter was recorded with a small telescope from a backyard in Florence, Arizona. The stacked video frames reveal the massive world bounded by planet girdling winds. Dark belts and light zones span the gas giant, along with rotating oval storms and its signature Great Red Spot. Galilean moon Ganymede is below and right in the frame. The Solar System's largest moon and its shadow are in transit across the southern Jovian cloud tops.
© Andrew McCarthy