视频：木星上的闪光
(原标题: Video: Flash on Jupiter)
2021-09-17
浏览次数: 35
木星上有一道闪电。几天前，几个监测太阳系最大行星的小组注意到一个两秒长的光爆发。这种闪光以前也见过，最著名的是1994年的一系列撞击。然后，苏梅克-列维9号彗星的碎片撞击木星，留下了持续数月的黑色斑点。从那以后，至少有七次撞击记录在木星上——通常是由业余天文学家发现的。在这段特色视频中，地球大气层的变化导致木星的图像闪烁，突然，一个明亮的闪光出现在中间偏左。木卫一和它的影子在右边可见。撞击木星的是什么可能永远不会知道，但考虑到我们对附近太阳系的了解，它很可能是一块岩石和冰——也许有一辆公共汽车那么大——很久以前从一颗经过的彗星或小行星上脱落下来。
查看原文解释
There has been a flash on Jupiter. A few days ago, several groups monitoring our Solar System's largest planet noticed a two-second long burst of light. Such flashes have been seen before, with the most famous being a series of impactor strikes in 1994. Then, fragments of Comet Shoemaker-Levy 9 struck Jupiter leaving dark patches that lasted for months. Since then, at least seven impacts have been recorded on Jupiter -- usually discovered by amateur astronomers. In the featured video, variations in the Earth's atmosphere cause Jupiter's image to shimmer when, suddenly, a bright flash appears just left of center. Io and its shadow are visible on the right. What hit Jupiter will likely never be known, but considering what we do know of the nearby Solar System, it was likely a piece of rock and ice -- perhaps the size of a bus -- that broke off long-ago from a passing comet or asteroid.
© T. Humbert, S. Barré, A. Desmougin & D. Walliang (Société Lorraine d'Astronomie), Astroqueyras