posted on Mar, 22 2013 @ 01:48 PM
The space rock that hit Earth 65 million years ago and is widely implicated in the end of the dinosaurs was likely a speeding comet. That is the
conclusion of research which suggests the 180km-wide Chicxulub crater in Mexico was carved out by a smaller object than previously thought. Many
scientists consider a large and relatively slow moving asteroid to have been the likely culprit.
the team suggests that frequently quoted iridium values are incorrect. Using a comparison with another extraterrestrial element deposited in the
impact - osmium - they were able to deduce that the collision deposited less debris than has previously been supposed. The recalculated iridium value
suggests a smaller body hit the Earth. So for the second part of their work, the researchers took the new figure and attempted to reconcile it with
the known physical properties of the Chicxulub impact.
www.bbc.co.uk...
Well that clears that up. Smaller, more energy, nasty little things! Stay away !
edit on 22-3-2013 by canucks555 because: (no reason given)