[Swordmaker]

7 minutes later, though? That would indicate he was something like 2500 miles away, no?

No. About 86 miles... Speed of sound at 30% humidity and 86ºF is 1086 feet/second.

1086 times 60 seconds times 7 minutes = 456,120 feet... divide by 5280 feet in a mile = ~86.4 miles away from impact.

[Dark Knight]

I saw a fireball a few weeks ago and it was amazing.

http://www.amsmeteors.org/index.html

This site explains it in english very well. Three other people reported seeing this fireball to the site, so it was nice to have others confirm my sighting.

DK