The aurora borealis glow on the northern horizon while stars wheel overhead in this long exposure, taken near the Bonneville Salt Flats in Utah on Nov. 4, 2021. Sky watchers in many locations were treated to unusually intense light displays, thanks to a geomagnetic storm created when multiple coronal mass ejections (CMEs) of charged particles from the Sun interacted with Earth’s magnetic field. Of related note: the location from which this image was taken is just a few miles from the spot where capsules from the OSIRIS-REx and NASA-ESA Mars Sample Return missions are expected to land.

2021年11月4日,在犹他州邦纳维尔盐田附近拍摄的这张长时间曝光照片中,极光在北部地平线上发光,而星星在头顶上旋转。许多地方的天空观察者都看到了异常强烈的光线,这要归功于来自太阳的多个带电粒子的日冕物质抛射(CME)与地球磁场相互作用时产生的地磁风暴。与此相关的是:拍摄这张图片的地点距离OSIRIS-REx和NASA-ESA火星样本返回任务的太空舱预计着陆的地点只有几英里。

Image credit: NASA/ Bill Dunford

图片来源: NASA/ Bill Dunford

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