为了解答土星极光是否与地球极光相似的问题，哈勃望远镜和卡西尼号探测器在2017年9月卡西尼最后环绕土星的轨道期间，对土星北极进行了同步监测。由于土星的倾斜，当时从地球可以清楚地看到其北极。本次发布的图像是由哈勃拍摄的，它结合了土星极光的紫外图像以及土星云层和光环的光学图像。与地球类似，土星的北极光可以在极点周围形成完整或部分的光环。然而，与地球不同的是，土星极光通常呈螺旋状，并且更可能在午夜和黎明前达到亮度峰值。与木星极光相比，土星极光似乎与土星内部磁场和附近多变的太阳风的联系更为密切。

🌌哈勃望远镜和卡西尼号探测器在2017年9月卡西尼最后环绕土星的轨道期间，对土星北极进行了同步监测，以研究土星极光是否与地球极光相似。

🌠此次发布的图像是由哈勃拍摄的，它结合了土星极光的紫外图像以及土星云层和光环的光学图像，展现了土星北极光的壮观景象。

🪐与地球类似，土星的北极光可以在极点周围形成完整或部分的光环；但与地球不同的是，土星极光通常呈螺旋状，并且更可能在午夜和黎明前达到亮度峰值。

🌞与木星极光相比，土星极光似乎与土星内部磁场和附近多变的太阳风的联系更为密切，这表明了不同行星极光形成机制的差异。

🔭2004年，当从地球可以清楚地看到土星南极时，科学家们也对土星南极光进行了类似的成像研究。

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.2024 December 8 Aurora around Saturn's North Pole Image Credit: NASA, ESA, Hubble, OPAL Program, J. DePasquale (STScI), L. Lamy (Obs. Paris) Explanation: Are Saturn's auroras like Earth's? To help answer this question, the Hubble Space Telescope and the Cassini spacecraft monitored Saturn's North Pole simultaneously during Cassini's final orbits around the gas giant in September 2017. During this time, Saturn's tilt caused its North Pole to be clearly visible from Earth.The featured image is a composite of ultraviolet images of auroras and optical images of Saturn's clouds and rings, all taken by Hubble. Like on Earth, Saturn's northern auroras can make total or partial rings around the pole.Unlike on Earth, however, Saturn's auroras are frequently spirals -- and more likely to peak in brightness just before midnight and dawn. In contrast to Jupiter's auroras, Saturn's auroras appear better related to connecting Saturn's internal magnetic field to the nearby, variable, solar wind. Saturn's southern auroras were similarly imaged back in 2004 when the planet's South Pole was clearly visible to Earth. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995) Tomorrow's picture: how many sisters? <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Amber StraughnSpecific rights apply.NASA Web Privacy,Accessibility, Notices; A service of:ASD atNASA /GSFC, NASA Science Activation& Michigan Tech. U.