最近大家不知关注没有,也许无人在意,美国一个巴士大小的废弃卫星总算掉到加州外海了,一切可以放心了。。 ...
seagal 发表于 2011-9-25 14:08
Source: http://www.space.com/13098-nasa- ... ean-crash-site.html
"Six years after the end of its productive scientific life, UARS broke into pieces during re-entry, and most of it up burned in the atmosphere," NASA wrote in a final status update. "Twenty-six satellite components, weighing a total of about 1,200 pounds, could have survived the fiery re-entry and reach the surface of Earth."
Follow up discussion:
修正了俺原来的臆测,结论
1. 卫星的材料大部分的确是可以烧掉的,而且是烧掉后可以气化(例如有机物)或者灰化(例如蚊香)的。无需引燃,燃点到了,该燃的自然就燃了。
2. 没烧掉的部分碎片没有牛那么大,也没有散成太多片(26片而已)。话说其实原来看过卫星实物展览的,通信卫星整个儿也就小圆餐桌大小 |