Seems to be something creating clouds behind it
Possibly a drought relief thingy (i know there are duster planes to seed clouds so that they rain, it's possible this is something similar to actually make clouds), or just anything spraying water out the back
(
Tedium Alduce me to interlow myself., Tue 20 Jul 2010, 22:35,
Reply)
Looks like it's in the upper atmosphere.
My vote is for a meteorite burning up on entry, and the cloud is just dust.
(, Wed 21 Jul 2010, 8:39, Reply)