2021年10月26日

Jupiter Rotates
Video Credit & Copyright:
JL Dauvergne; Music: Oro Aqua (Benoit Reeves)

Explanation: Observe the graceful twirl of our Solar System’s largest planet. Many interesting features of Jupiter’s enigmatic atmosphere, including dark belts and light zones, can be followed in detail. A careful inspection will reveal that different cloud layers rotate at slightly different speeds. The famous Great Red Spot is not visible at first — but soon rotates into view. Other smaller storm systems occasionally appear. As large as Jupiter is, it rotates in only 10 hours. Our small Earth, by comparison, takes 24 hours to complete a spin cycle. The featured high-resolution time-lapse video was captured over five nights earlier this month by a mid-sized telescope on an apartment balcony in Paris, France. Since hydrogen and helium gas are colorless, and those elements compose most of Jupiter’s expansive atmosphere, what trace elements create the observed colors of Jupiter’s clouds remains a topic of research.

Discovery + Outreach: Graduate student research position open for APOD

Tomorrow’s picture: veil the bat


木星自转
影片提供与版权:
JL Dauvergne; Music: Oro Aqua (Benoit Reeves)

说明: 请观赏太阳系最大行星的美丽涡漩。在这部影片里,包括暗云带及淡云区在内的许多木星谜样大气之有趣特征,皆可清楚分辨。此外,在仔细检视之下,不难发现不同云层公转的速率稍有不同。在影片里,著名的大红斑刚起初看不到,但很快的就旋入视野。而其他的较小型风暴系统则偶尔现踪。木星是个很庞大的行星,不过只需约10小时就自转一圈。相较之下,我们娇小地球自转的周期长达24小时。上面这部高解析的主题影片,是由位在法国巴黎公寓阳台的一部中口径望远镜,摄于这个月稍早的5个晚上。虽然木星广袤大气的主要成分是无色的氢与氦气,然而到底是那些微量元素,造就了木星大气的可见色彩,至今依然是研究的题材。

发现+推广: APOD研究生研究职位空缺

明日的图片: veil the bat

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