朱诺号拍摄到形似大理石的木星
影像来源与版权:NASA/JPL-Caltech/SwRI/MSSS; Processing: Kevin M. Gill

说明:木星近距离看起来像什么?大多数木星的影像都是从远处拍摄的,要么是地球,要么是一个足够远的地方,那里可以看到近半个木星。然而,这幅影像是由相对近距离拍摄的数张照片结合而成,在这幅影像中可以看到不足一半的木星。从朱诺号看去,木星仍然是球形,但透视变形现在使它看起来更像一块大理石。在木星的云顶上可以看到一条显著的黑暗水平带,其中包含一片白色卵形云和一片白色区域云,它们都环绕着木星运行。大红斑出现在影像的右上方。这幅特征影像是由朱诺号宇宙飞船在2月份第17次飞越我们太阳系的最大行星时拍摄的。朱诺号的任务现在延长到2021年,以新的方式探索木星。朱诺号的数据已经确认一些发现,,包括木星磁场变得异常起伏不定,并且木星的一些云系深入这颗行星大约3000公里。
翻译:北京天文馆

Jupiter Marble from Juno
Image Credit & Copyright: NASA/JPL-Caltech/SwRI/MSSS; Processing: Kevin M. Gill

Explanation: What does Jupiter look like up close? Most images of Jupiter are taken from far away, either from Earth or from a great enough distance that nearly half the planet is visible. This shot, though, was composed from images taken relatively close in, where less than half of the planet was visible. From here, Jupiter still appears spherical but perspective distortion now makes it look more like a marble. Visible on Jupiter’s cloud tops are a prominent dark horizontal belt containing a white oval cloud, and a white zone cloud, both of which circle the planet. The Great Red Spot looms on the upper right. The featured image was taken by the robotic Juno spacecraft in February during its 17th close pass of our Solar System’s largest planet. Juno’s mission, now extended into 2021, is to study Jupiter in new ways. Juno’s data has already enabled discoveries that include Jupiter’s magnetic field being surprisingly lumpy, and that some of Jupiter’s cloud systems run about 3,000 kilometers into the planet.
Astronomy Picture of the Day 05/08/2019