IMHO, a high altitude detonation of one of Louis Frank's small watery comets.
http://www.freerepublic.com/focus/f-news/1092484/posts?page=4#4
http://www.freerepublic.com/focus/f-news/1092484/posts?page=15#15
http://www.freerepublic.com/focus/f-news/808563/posts?page=17#17
Small Comets and Our Origins
University of Iowa | circa 1999 | Louis A. Frank
Posted on 10/19/2004 11:13:25 PM PDT by SunkenCiv
http://www.freerepublic.com/focus/bloggers/1250694/posts
Small Asteroid Passes Between Satellites and Earth
Space dot com | 22 December 2004 | Robert Roy Britt
Posted on 12/23/2004 7:36:30 AM PST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1307286/posts