彗星和火球
(原标题: The Comet and the Fireball)
2021-12-20
浏览次数: 5
这张照片应该是一颗彗星。具体来说，2021年最亮的彗星伦纳德彗星的一系列图像被捕捉到。但宇宙另有安排。在不到一秒的时间里，一颗明亮到可以被称为火球的流星从彗星的正下方划过。流星的闪光比彗星的彗发还要绿。流星呈绿色的原因可能是镁从流星鹅卵石大小的核心蒸发，而彗星呈绿色的原因可能是最近从彗星城市大小的核心喷射出的双原子碳。这些照片是10天前在美国加利福尼亚州的萨克拉门托河和拉森山拍摄的。这颗火球位于今年双子座流星雨的前沿——几天后，双子座流星雨达到了顶峰。伦纳德彗星在上周达到肉眼可见后，现在正在褪色，但现在正在向南方的天空移动。几乎超空间：随机APOD生成器
查看原文解释
This picture was supposed to feature a comet. Specifically, a series of images of the brightest comet of 2021 were being captured: Comet Leonard. But the universe had other plans. Within a fraction of a second, a meteor so bright it could be called a fireball streaked through just below the comet. And the meteor's flash was even more green than the comet's coma. The cause of the meteor's green was likely magnesium evaporating from the meteor's pebble-sized core, while the cause of the comet's green was likely diatomic carbon recently ejected from the comet's city-sized nucleus. The images were taken 10 days ago over the Sacramento River and Mt. Lassen in California, USA. The fireball was on the leading edge of this year's Geminid Meteor Shower -- which peaked a few days later. Comet Leonard is now fading after reaching naked-eye visibility last week -- but now is moving into southern skies. Almost Hyperspace: Random APOD Generator
© Cory Poole