燃料废气羽流在天空中膨胀结晶，反射冰粒上的阳光，佛罗里达州发射后出现这一景象。
SpaceX火箭在佛罗里达州黎明前提供了令人惊叹的景象，巨大的发光“水母云”蔓延数英里，原因是燃料废气羽流在天空中膨胀结晶，并在冰粒上反射阳光。
Expanding plume of fuel exhaust crystalized in the sky and reflected sunlight off frozen particles after Florida launch A SpaceX rocket provided a stunning pre-dawn display over Florida as a massive, luminescent “jellyfish cloud” spread for miles, caused by an expanding plume of fuel exhaust crystalizing in the sky and reflecting sunlight off the frozen particles.
这一现象发生在周二东部时间上午6点33分左右，当时搭载货物前往国际空间站的猎鹰9号火箭发射。
The phenomenon occurred shortly after Tuesday’s 6.33am ET launch of the Falcon 9 rocket carrying cargo to the International Space Station.