* Astronomy

Hum,
i got a strange email with this:

"13 june 2006 at 17:15 UTC defragmented splitt to two fireballs fragments was seen over north Poland over the city Gdansk and Gdynia . fireball came from north direction and was seen in the sky wery bright light of this two fragments for about 3 sekundes and was heard strong boom with sound afterefects ( echos )"

Weblink:

It is definitely a vapourtrail (contrail)...