A Sumerian Observation
of the Kofels' Impact Event
by Alan Bond
and Mark HempsellComet/Asteroid Impacts
and Human Society
ed by Peter T. Bobrowsky
and Hans Rickman
intro (PDF)
due to links hereAsteroids:
Deadly Impact
National Geographic
as an aside: 3300 BC is at least 1100 years before the destruction of Sodom and Gomorrah.